CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP
S-3/A, EX-2, 2000-08-07
ASSET-BACKED SECURITIES
Previous: CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP, S-3/A, EX-1, 2000-08-07
Next: CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP, S-3/A, EX-3, 2000-08-07



The  information  in  this  prospectus  supplement  is not  complete  and may be
changed. We may not sell these securities until the registration statement filed
with the Securities Exchange Commission is effective. This prospectus supplement
is not an offer to sell these  securities  and it is not  soliciting an offer to
buy these securities in any state where the offer or sale is not permitted.



                              SUBJECT TO COMPLETION

PRELIMINARY  PROSPECTUS  SUPPLEMENT  DATED  ________________,   200_  Prospectus
supplement dated _________, ___) (to prospectus dated , )

                                    $--------

                                [---------------]
                               Seller and Servicer

                           Credit Suisse First Boston
                            Mortgage Securities Corp.
                                    Depositor

            Mortgage-Backed Pass-Through Certificates, Series 200_-___
                                     Issuer

The Trust

The    trust     will     hold    a    pool    of    [one-    to     four-family
residential][commercial][multifamily] mortgage loans.

Offered Certificates

The trust will issue these classes of  certificates  that are offered under this
prospectus supplement:

o     [_] classes of Class A Certificates

Credit Enhancement

Credit   enhancement  for  all  of  these   certificates  will  be  provided  by
subordinated  certificates,  overcollateralization  represented by the excess of
the balance of the mortgage loans over the balance of the Class A  Certificates,
[and a financial guaranty insurance policy issued by [_____].

You should consider carefully the risk factors beginning on page S-__ in this
prospectus supplement.

Neither  the  Securities  and  Exchange  Commission  nor  any  state  securities
commission has approved or disapproved of the offered certificates or determined
that this prospectus  supplement or the prospectus is accurate or complete.  Any
representation to the contrary is a criminal offense.

The Attorney  General of the State of New York has not passed on or endorsed the
merits of this offering. Any representation to the contrary is unlawful.

[Underwriter] will offer the Class A Certificates subject to availability.

                              [Name of Underwriter]

                                   Underwriter

                                                                Version B
<PAGE>


               Important notice about information presented in this
                     prospectus supplement and the prospectus

     You should rely on the  information  contained in this document or to which
we have referred you to in this  prospectus  supplement.  We have not authorized
anyone to provide you with information that is different. This document may only
be used where it is legal to sell these securities.

     We provide information to you about the offered certificates in two
separate documents that progressively provide more detail:

o    the prospectus,  which provides general information,  some of which may not
     apply to your series of certificates; and

o    this  prospectus  supplement,  which  describes the specific  terms of your
     series of certificates.

     We  include   cross-references  in  this  prospectus   supplement  and  the
accompanying  prospectus  to  captions  in these  materials  where  you can find
further related discussions.

     You can find a listing of the pages  where  capitalized  terms used in this
prospectus  supplement are defined under the caption "Index of Terms"  beginning
on page 126 in the prospectus.

                                TABLE OF CONTENTS

                                  [INSERT HERE]

<PAGE>
                                     SUMMARY

      The  following   summary  is  a  very  general  overview  of  the  offered
certificates  and does  not  contain  all of the  information  that  you  should
consider in making your investment  decision.  To understand all of the terms of
the offered certificates, you should read carefully this entire document and the
prospectus.

Title of securities.......[_____________________ Mortgage-Backed Pass-Through
                          Certificates, Series 200_-__].

Depositor                 Credit Suisse First Boston Mortgage Securities Corp.

Seller                    [______________________________].

Servicer                  [______________________________].

Trustee                   [______________________________].

Financial guaranty insurer[______________________________].

Mortgage Pool             [______][fixed][adjustable]  rate mortgage loans
                          with an aggregate  principal  balance of approximately
                          $[ ] as of the cut-off date, secured by [first/junior]
                          liens   on   [one-   to    four-family    residential]
                          [commercial] [multifamily] properties.

Cut-off date              [                ] 1, [      ].
                           -----------------     -------

Closing date              On or about [               , 200_].
                                       ---------------

Distribution              date.........Beginning  on  [__________,   200_],  and
                          thereafter on the [ ] day of each month, or if the [ ]
                          day is not a business day, on the next business day.

Scheduled                 final distribution date [__________, 20__]. The actual
                          final   distribution   date  could  be   substantially
                          earlier.

Form of offered certificates.  Book-entry.
                          See   "Description  of  the   Certificates--Book-Entry
                          Registration" in this prospectus supplement.

Minimum denominations.....$25,000.


                                      S-3
<PAGE>

                              Offered Certificates

----------------------------------------------------------------------
                             Initial     Initial
                            Certificate  Rating
              Pass-Through   Principal   Initial
    Class         Rate       Balance     (___/___)      Designations
                                          --------
----------------------------------------------------------------------
----------------------------------------------------------------------
Class A Certificates:

----------------------------------------------------------------------
----------------------------------------------------------------------

    [A-1       Adjustable  $               AAA/AAA   Senior/Adjustable
                 Rate        --------                      Rate]

----------------------------------------------------------------------
    [A-2               %   $               AAA/AAA     Senior/Fixed
               --------     --------                      Rate]
----------------------------------------------------------------------
    [A-3               %   $               AAA/AAA   Senior/Lockout/Fixed
               --------     --------                      Rate]

----------------------------------------------------------------------
Total Class
A Certificates:            $[_______]

----------------------------------------------------------------------
                            Non-Offered Certificates

----------------------------------------------------------------------
Class SB and Class R Certificates:

----------------------------------------------------------------------

      SB           NA      $[      ]         NA        Subordinate
                             -------
----------------------------------------------------------------------

      R            NA      $[      ]         NA        Subordinate
                             -------
----------------------------------------------------------------------
Total Class SB and Class R Certificates:  $[   ]

----------------------------------------------------------------------
Total offered and
 non-offered certificates: $[            ]
                            -------------
----------------------------------------------------------------------

Other Information:

Class A-1:

 Adjustable

    Rate:     Initial            Formula            Maximum

 Class A-1:   [    ]%      One-Month LIBOR +   weighted average
              ------       [    ]%             net mortgage
                                               rate on the
                           ------              mortgage loans



                                      S-4
<PAGE>
The Trust

The  depositor  will  establish  a trust  with  respect  to the  Mortgage-Backed
Pass-Through  Certificates,   Series  200_-__  under  a  pooling  and  servicing
agreement.  On the closing date, the depositor will deposit the pool of mortgage
loans described in this prospectus  supplement into the trust.  Each certificate
will represent a partial ownership interest in the trust.

[The trust will also include credit  enhancement for the Class A Certificates in
the form of a financial guaranty insurance policy provided by _____________.]

The Mortgage Pool

The  mortgage   loans  to  be  deposited  into  the  trust  have  the  following
characteristics as of the cut-off date:

[insert table]

[The interest rate on the mortgage loans will adjust on each  adjustment date to
equal the sum of Six-Month LIBOR and the note margin on the mortgage, subject to
a maximum and minimum interest rate.]

For additional  information  regarding the mortgage pool see "Description of the
Mortgage Pool" in this prospectus supplement.

Distributions on the Offered Certificates

Amount available for monthly  distribution.  On each monthly  distribution date,
the trustee will make  distributions  to  investors.  The amount  available  for
distribution will include:

o    collections  of  monthly   payments  on  the  mortgage   loans,   including
     prepayments and other unscheduled collections [plus]

o     [advances for delinquent payments] minus

o    the fees and  expenses  of the  subservicers  and the  servicer,  including
     reimbursement for advances [minus]

o     [the premium paid to the financial guaranty insurer].

See "Description of the Certificates--Glossary of Terms--Available  Distribution
Amount" in this prospectus supplement.

Priority of  distributions.  Distributions on the offered  certificates  will be
made from available amounts as follows:

o    [Payment to servicer for certain unreimbursed advances]

o    Distribution of interest to the Class A Certificates

o    Distributions of principal to the Class A Certificates

o    [Reimbursement  to the financial  guaranty insurer for payments made by the
     financial guaranty insurer to the Class A Certificates]

o    Payments  of  excess  interest  payments  on the  mortgage  loans  to  make
     principal  payments  on the  Class A  Certificates,  until  the  amount  of
     overcollateralization reaches the required amount

o    Distributions of interest in respect of prepayment  interest  shortfalls on
     the Class A Certificates

o    Distribution of remaining funds to the Class SB and Class R Certificates

Interest  distributions.  The amount of  interest  owed to each class of Class A
Certificates on each distribution date will equal:

o    the pass-through rate for that class of certificates multiplied by

o    the  principal  balance  of  that  class  of  certificates  as of  the  day
     immediately prior to the related distribution date multiplied by

o    1/12, in the case of the  fixed-rate  certificates  or the actual number of
     days in the  interest  accrual  period  divided by 360,  in the case of the
     adjustable rate certificates minus


                                      S-5
<PAGE>
o    the share of some types of interest shortfalls allocated to that class.

See "Description of the Certificates--Interest Distributions" in this prospectus
supplement.

Allocations of principal.  Principal  distributions on the certificates  will be
allocated among the various classes of offered certificates as described in this
prospectus  supplement.  Until the required amount of  overcollateralization  is
reached,  all principal payments on the mortgage loans will be distributed among
the  Class A  Certificates,  unless  the  Class  A  Certificates  are no  longer
outstanding.

In addition,  the Class A Certificates will receive a distribution in respect of
principal,  to the extent of any excess interest  payments on the mortgage loans
available   to   cover   losses   and   then   to   increase   the   amount   of
overcollateralization  until the  required  amount of  overcollateralization  is
reached.  In addition,  the Class A Certificates  will receive a distribution of
principal from the financial  guaranty  insurance  policy to cover losses on the
mortgage loans allocated to the Class A Certificates.

See  "Description of the  Certificates--Principal  Distributions  on the Class A
Certificates" in this prospectus supplement.

Credit Enhancement

The credit enhancement for the benefit of the certificates consists of:

Excess  Interest.  Because  more  interest  is  paid by the  mortgagors  than is
necessary  to pay the  interest on the  certificates  each month,  there will be
excess  interest.  Some of this  excess  interest  may be  used to  protect  the
certificates  against some losses, by making an additional  payment of principal
up to the amount of the losses.

Overcollateralization. Any excess interest not used to cover interest shortfalls
or current  period losses will be paid as principal on the Class A  Certificates
to reduce the principal balance of the Class A Certificates  below the aggregate
principal balance of the mortgage loans. The excess amount of the balance of the
mortgage loans represents overcollateralization, which may absorb some losses on
the  mortgage  loans,  if not  covered  by  excess  interest.  If the  level  of
overcollateralization   falls  below  what  is  required,  the  excess  interest
described above will also be paid to the  certificates  as principal.  This will
reduce the  principal  balance of the  certificates  faster  than the  principal
balance   of   the   mortgage    loans   so   that   the   required   level   of
overcollateralization is reached.

See "Description of the  Certificates--Allocation  of Losses;  Subordination" in
this prospectus supplement.

[The Financial Guaranty Insurance Policy

_____________  will issue a financial  guaranty  insurance  policy as a means of
providing additional credit enhancement for the Class A Certificates.  Under the
policy,  the financial  guaranty  insurer will pay an amount that will cover any
shortfalls in amounts available to pay the interest  distribution amount for the
Class A Certificates  on any  distribution  date,  the principal  portion of any
losses on the  mortgage  loans  allocated  to the Class A  Certificates  and any
unpaid  certificate  principal  balance of the Class A Certificates on the final
distribution  date.  The financial  guaranty  insurance  policy will not provide
coverage for prepayment interest shortfalls.]

[See "Description of the Certificates--Financial  Guaranty Insurance Policy" and
"The Financial Guaranty Insurer" in this prospectus supplement.]

[Advances

For any month, if the servicer does not receive the full scheduled  payment on a
mortgage  loan,  the  servicer  will  advance  funds to cover the  amount of the
scheduled  payment that was not made.  However,  the servicer will advance funds
only if it determines that the advance will be recoverable  from future payments
or collections on that mortgage loan.

                                      S-6
<PAGE>

See "Description of the Certificates--Advances" in this prospectus supplement.]

Optional Termination

On any distribution  date on which the principal  balances of the mortgage loans
is less  than  10% of their  principal  balances  as of the  cut-off  date,  the
servicer or the depositor will have the option to:

o    purchase  from the trust all  remaining  mortgage  loans,  causing an early
     retirement of the certificates; or

o    purchase all the certificates.

Under either type of optional purchase,  holders of the outstanding certificates
will receive the outstanding  principal balance of the certificates in full with
accrued  interest.  However,  no purchase of the mortgage loans or  certificates
will be  permitted  if it would  result in a draw  under the  policy  unless the
financial  guaranty insurer  consents to the termination.  In either case, there
will be no  reimbursement  of  principal  reductions  or related  interest  that
resulted from losses allocated to the certificates.

See "Pooling and Servicing Agreement--Termination" in this prospectus supplement
and "Description of the Certificates--Termination" in the prospectus.

Ratings

When issued,  the offered  certificates will receive ratings which are not lower
than those listed in the table on page S-[ ] of this prospectus supplement.  The
ratings on the offered  certificates  address the likelihood that holders of the
offered  certificates will receive all distributions on the underlying  mortgage
loans to which they are entitled.  A security rating is not a recommendation  to
buy,  sell or hold a security and may be changed or withdrawn at any time by the
assigning  rating agency.  The ratings also do not address the rate of principal
prepayments on the mortgage  loans.  For example,  the rate of  prepayments,  if
different than originally anticipated, could adversely affect the yield realized
by holders of the offered certificates.

See "Ratings" in this prospectus supplement.

Legal Investment

When  issued,  the  Class  [  ]  Certificates  will  not  be  "mortgage  related
securities"  for purposes of SMMEA.  You should  consult your legal  advisors in
determining whether and to what extent the offered certificates constitute legal
investments for you.

See "Legal Investment" in this prospectus  supplement for important  information
concerning  possible  restrictions  on ownership of the offered  certificates by
regulated institutions.

ERISA Considerations

The Class A  Certificates  may be  considered  eligible  for purchase by persons
investing  assets of employee benefit plans or individual  retirement  accounts.
Persons  investing  assets of such plans or accounts  should  consult with their
counsel before purchasing the notes.

See "ERISA Considerations" in this prospectus supplement and in the prospectus.

Tax Status

For federal income tax purposes,  the depositor will elect to treat the trust as
[ ] real estate mortgage investment conduit[s]. The certificates, other than the
Class R Certificates, will represent ownership of regular interests in the trust
and will be treated as  representing  ownership  of debt for federal  income tax
purposes.  You will be required to include in income all  interest  and original
issue  discount,  if any, on such  certificates  in accordance  with the accrual
method of accounting regardless of your usual methods of accounting. For federal
income tax purposes,  each of the Class R Certificates will be the sole residual
interest in one of the [ ] real estate mortgage investment conduits.

For  further  information  regarding  the  federal  income tax  consequences  of
investing in the offered certificates, including important information regarding
the tax treatment of the Class R Certificates,  see "Material Federal Income Tax
Consequences" in this prospectus supplement and in the prospectus.


                                      S-7
<PAGE>
                                  RISK FACTORS

      The offered  certificates are not suitable  investments for all investors.
In particular,  you should not purchase any class of offered certificates unless
you understand the  prepayment,  credit,  liquidity and market risks  associated
with that class.

      The offered  certificates  are  complex  securities.  You should  possess,
either alone or together with an investment advisor,  the expertise necessary to
evaluate  the  information  contained  in  this  prospectus  supplement  and the
prospectus in the context of your financial situation and tolerance for risk.

      You should carefully  consider,  among other things, the following factors
in connection with the purchase of the offered certificates:

Risk of Loss

The return on your   Losses on the mortgage loans may occur due to a
certificates may be  wide variety of causes, including a decline in
affected by losses   real estate values, and adverse changes in the
on the mortgage      borrower's financial condition.  A decline in
loans, which could   real estate values or economic conditions
occur due to a       nationally or in the regions where the
variety of causes,   mortgaged properties are located may increase
and are more likely  the risk of losses on the mortgage loans.
because a            [Special risks for specific loan types, such as
significant number   negative amortization or escalating payments,
of mortgage loans    will be disclosed if material to an individual
are secured by       offering.]
junior liens on the
mortgaged property.  [______% of the mortgage loans included in the
                     mortgage loan pool are secured by second
                     mortgages or deeds of trust.  Proceeds from
                     liquidation of the property will be available
                     to satisfy the mortgage loans only if the
                     claims of any senior mortgages have been
                     satisfied in full. When it is uneconomical to
                     foreclose on the mortgaged property or engage
                     in other loss mitigation procedures, the
                     servicer may write off the entire outstanding
                     balance of the mortgage loan as a bad debt. The
                     foregoing risks are particularly applicable to
                     mortgage loans secured by second liens that
                     have high combined loan-to-value ratios or low
                     junior ratios because it is comparatively more
                     likely that the servicer would determine
                     foreclosure to be uneconomical. As of the
                     cut-off date, the weighted average combined
                     loan-to-value ratio of the mortgage loans is
                     ______%, and approximately ______% of the
                     mortgage loans will have combined loan-to-value
                     ratios in excess of ______%.]

[The underwriting    [The underwriting standards under which the
standards for the    junior mortgage loans were underwritten are
junior mortgage      analogous to credit lending, rather than
loans create         mortgage lending, since underwriting decisions
greater risks to     were based primarily on the borrower's credit
you, compared to     history and capacity to repay rather than on
those for first      the value of the collateral upon foreclosure.
lien loans.]         The underwriting standards allow loans to be


                                      S-8
<PAGE>

                     approved with combined  loan-to-value ratios of
                     up to 125%.  See   "Description   of  the  Mortgage
                     Pool--Underwriting Standards" in this  prospectus
                     supplement.  Because of the relatively  high  combined
                     loan-to-value  ratios  of  the mortgage  loans and the
                     fact that a  significant  number of the mortgage  loans
                     are secured by junior liens,  losses on the mortgage loans
                     will likely  be  higher  than  on traditional first
                     lien mortgage loans.]

[Origination         [[       ]% of the mortgage loans included in
disclosure           the mortgage pool are subject to special rules,
practices for the    disclosure requirements and other regulatory
mortgage loans       provisions because they are high cost loans.
could create         Purchasers or assignees of these high cost
liabilities that     loans, could be exposed to all claims and
may affect the       defenses that the mortgagors could assert
return on your       against the originators of the mortgage loans.
certificates.]       Remedies available to the mortgagor include
                     monetary  penalties,  as well as  recission  rights
                     if the appropriate  disclosures  were not given as
                     required.  See "Certain   Legal   Aspects  of  the
                     Mortgage   Loans  and Contracts--The Mortgage Loans--
                     Anti-Deficiency  Legislation and Other Limitations on
                     Lenders" in the prospectus].

The return on your   One risk of investing in mortgage-backed
certificates may be  securities is created by any concentration of
particularly         the related properties in one or more
sensitive to         geographic regions.  Approximately __% of
changes in real      the cut-off date principal balance of the
estate markets in    mortgage loans are located in [California].  If
specific areas.      the regional economy or housing market weakens
                     in [California], or in any other region having
                     a significant concentration of properties
                     underlying the mortgage loans, the mortgage
                     loans in that region may experience high rates
                     of loss and delinquency, resulting in losses to
                     Class A Certificateholders.  A region's
                     economic condition and housing market may be
                     adversely affected by a variety of events,
                     including natural disasters such as
                     earthquakes, hurricanes, floods and eruptions,
                     and civil disturbances, including riots.
                     [Concentrations material to an individual
                     offering will be disclosed.]

Some of the          Approximately ___% of the mortgage loans (based
mortgage loans       on principal balances) are not fully amortizing
provide for large    over their terms to maturity and, thus, will
payments at          require substantial principal payments (i.e., a
maturity.            balloon amount) at their stated maturity.
                     Mortgage  loans which require  payment of a balloon  amount
                     involve a greater  degree of risk  because the ability of a
                     mortgagor  to pay a balloon  amount  typically  will depend
                     upon the mortgagor's ability either to timely refinance the
                     loan or to sell the related mortgaged property.

                     See  "Description  of the Mortgage Pool" in this prospectus
                     supplement.

                                      S-9
<PAGE>

The return on your   The only credit enhancement for the Class A
certificates will    Certificates will be:
be reduced if        o  the excess interest payments on the
losses exceed the       mortgage loans;
credit enhancement   o  overcollateralization represented by the
available to your       excess of the balance of the mortgage loans
certificates.           over the balance of the Class A
                        Certificates; and
                     [o a financial guaranty insurance policy
                        issued by ____________.]


The return on your   Mortgage loans similar to those included in the
certificates may be  mortgage loan pool have been originated for a
reduced in an        limited period of time.  During this time,
economic downturn.   economic conditions nationally and in most
                     regions of the country have been generally
                     favorable.  However, a deterioration in
                     economic conditions could adversely affect the
                     ability and willingness of mortgagors to repay
                     their loans.  No prediction can be made as to
                     the effect of an economic downturn on the rate
                     of delinquencies and losses on the mortgage
                     loans.

[The reloading of    [With respect to mortgage loans which were used
debt could increase  for debt consolidation, there can be no
your risk.]          assurance that the borrower will not incur
                     further debt.  This reloading of debt could
                     impair the ability of borrowers to service
                     their debts, which in turn could result in
                     higher rates of delinquency and loss on the
                     mortgage loans.]

The value of your    If the performance of the mortgage loans is
certificates may be  substantially worse than assumed by the rating
reduced if losses    agencies, the ratings of any class of the
are higher than      certificates may be lowered in the future.
expected             This would probably reduce the value of those
                     certificates.  Neither the depositor, the
                     servicer nor any other entity will have any
                     obligation to supplement any credit
                     enhancement, or to take any other action to
                     maintain any rating of the certificates.

                     See "Summary-Credit Enhancement" and
                     "Description of the Certificates-Allocation of
                     Losses; Subordination" in this prospectus
                     supplement.


Adverse              The trust could become liable for an
environmental        environmental condition at a mortgaged
conditions on the    property. Any potential liability could reduce
mortgaged            or delay payments to certificateholders.
property may
reduce or delay      "Phase I" environmental assessments have been
your payments        performed on all but [  ] of the mortgaged
                     properties,  which  constitutes  [ ]% of the  initial  pool
                     balance.  None of the  environmental  assessments  revealed
                     material adverse environmental  conditions or circumstances
                     affecting any mortgaged property, except those cases:

                     o     in which the adverse conditions were
                        remediated or abated before the date of
                        issuance of the certificates;

                                      S-10
<PAGE>

                     o  in which an operations and maintenance
                        plan or periodic monitoring of the mortgaged
                        property or nearby properties was
                        recommended;

                     o  involving  a  leaking   underground   storage   tank  or
                        groundwater  contamination at a nearby property that had
                        not yet materially  affected the mortgaged  property and
                        for which a responsible party either has been identified
                        under applicable law or was then conducting  remediation
                        of the related condition;

                     o  in which  groundwater,  soil or other  contamination was
                        identified   or  suspected,   and  an  escrow   reserve,
                        indemnity,  environmental  insurance or other collateral
                        was provided to cover the  estimated  costs of continued
                        monitoring, investigation, testing or remediation;

                     o  involving radon; or

                     o  in which the related borrower has agreed to seek a "case
                        closed"   status  for  the  issue  from  the  applicable
                        governmental agency.

                     Some of the mortgage  loans carry  environmental  insurance
                     which may provide  coverage in an amount  equal to all or a
                     portion  of the  principal  amount of the loan or an amount
                     necessary  to provide  for  certain  remediation  expenses.
                     There  can  be no  assurance,  however,  that  should  such
                     coverage  be  needed,   coverage   would  be  available  or
                     uncontested, that the terms and conditions of such coverage
                     would be met,  that coverage  would be  sufficient  for the
                     claims at issue or that  coverage  would not be  subject to
                     certain deductibles.

                     To  decrease  the  likelihood  of  environmental  liability
                     against  the trust,  the  servicer  is required to obtain a
                     satisfactory  environmental  site assessment of a mortgaged
                     property and see that any required remedial action is taken
                     before acquiring title or assuming its operation.

                     See   "Description   of  the  Mortgage   Pool--Underwriting
                     Standards--Environmental  Assessments"  in this  prospectus
                     supplement       and        "Description       of       the
                     Certificates--Enforcement     of    Due-on-Sale    Clauses;
                     Realization   Upon   Defaulted   Mortgage   Loans,"   "Risk
                     Factors--Environmental conditions may subject the mortgaged
                     property to liens or impose  costs on the  property  owner"
                     and  "Certain  Legal  Aspects  of the  Mortgage  Loans  and
                     Contracts--Environmental Legislation" in the prospectus.

                                      S-11
<PAGE>
Loss Mitigation
Practices
The release of a     [The servicer may use a wide variety of
lien may increase    practices to limit losses on the mortgage
your risk.           loans.  The pooling and servicing agreement
                     permits  the  servicer  to  release  the lien
                     on a  limited number of mortgaged properties securing
                     the mortgage loans, if the  mortgage  loan is current in
                     payment.  See "Pooling and  Servicing  Agreement--
                     Refinancing  of Senior Lien" and "--Collection and
                     Liquidation  Practices;  Loss Mitigation"
                     in this prospectus supplement.]

Limited Obligations
Payments on the      The certificates represent interests only in
mortgage loans,      the Mortgage-Backed Pass-Through Certificates,
together with the    Series 200_-___ Trust.  Credit enhancement
financial guaranty   includes overcollateralization, excess
insurance policy,    interest, [and a financial guaranty insurance
are the primary      policy]. The certificates do not represent an
source of payments   interest in or obligation of the depositor, the
on your              servicer or any of their affiliates. None of
certificates.        the depositor, the servicer or any of their
                     affiliates   will  have  any   obligation   to  replace  or
                     supplement  the  credit  enhancement,  or to take any other
                     action  to  maintain  any  rating of the  certificates.  If
                     proceeds   from   the   assets   of   the   Mortgage-Backed
                     Pass-Through  Certificates,  Series  200_-___ Trust are not
                     sufficient  to make all  payments  provided  for  under the
                     pooling and  servicing  agreement,  investors  will have no
                     recourse  to  the  depositor,  the  servicer  or any of its
                     affiliates.

Liquidity Risks
You may have to      A secondary market for your certificates may
hold your            not develop.  Even if a secondary market does
certificates to      develop, it may not continue or it may be
maturity if their    illiquid.  Neither the underwriter nor any
marketability is     other person will have any obligation to make a
limited.             secondary market in your certificates.
                     Illiquidity  means  you may not be able to find a buyer  to
                     buy your  securities  readily or at prices that will enable
                     you to  realize a  desired  yield.  Illiquidity  can have a
                     severe   adverse   effect  on  the  market  value  of  your
                     certificates.

                     Any   class  of   offered   certificates   may   experience
                     illiquidity,  although typically illiquidity is more likely
                     for classes that are  especially  sensitive to  prepayment,
                     credit or interest rate risk, or that have been  structured
                     to meet the investment  requirements of limited  categories
                     of investors.

                                      S-12
<PAGE>

Special Yield and
Prepayment
Considerations


The yield to         The yield to maturity on each class of offered
maturity on your     certificates will depend on a variety of
certificates will    factors, including:
vary depending on
the rate of          o    the rate and timing of principal payments
prepayments.             on the mortgage loans, including
                         prepayments, defaults and liquidations, and
                         repurchases due to breaches of
                         representations or warranties;

                     o   the pass-through rate for that class;

                     o   interest shortfalls due to mortgagor
                         prepayments; and

                     o   the purchase price of that class.

                     In general, if you purchase a certificate at a price higher
                     than  its  outstanding   principal  balance  and  principal
                     distributions  on your  certificate  occur  faster than you
                     assumed at the time of  purchase,  your yield will be lower
                     than  you  anticipated.   Conversely,  if  you  purchase  a
                     certificate at a price lower than its outstanding principal
                     balance  and  principal  distributions  on that class occur
                     more slowly than you assumed at the time of purchase,  your
                     yield will be lower than you anticipated.

The rate of          Because mortgagors can typically prepay their
prepayments on the   mortgage loans at any time, the rate and timing
mortgage loans will  of principal distributions on the offered
vary depending on    certificates are highly uncertain.  Typically,
future market        when market interest rates increase, borrowers
conditions, and      are less likely to prepay their mortgage
other factors.       loans.  This could result in a slower return of
                     principal to you at a time when you might have
                     been able to reinvest your funds at a higher
                     rate of interest than the pass-through rate on
                     your class of certificates. On the other hand,
                     when market interest rates decrease, borrowers
                     are typically more likely to prepay their
                     mortgage loans.  This could result in a faster
                     return of principal to you at a time when you
                     might not be able to reinvest your funds at an
                     interest rate as high as the pass-through rate
                     on your class of certificates.


                                      S-13
<PAGE>

                     [Approximately  ___%  of  the  mortgage  loans  permit  the
                     mortgagor  to convert the  adjustable  rate on the mortgage
                     loan to a fixed rate. Upon the conversion,  the subservicer
                     or the servicer will  repurchase the mortgage  loan,  which
                     will  have  the  same  effect  as  a  prepayment  in  full.
                     Mortgagors may be more likely to exercise their  conversion
                     options when interest  rates are rising.  As a result,  the
                     certificates may receive greater prepayments at a time when
                     prepayments would not normally be expected.]

                     See "Maturity and Prepayment Considerations" in

                     the prospectus.

                     [______%  of the  mortgage  loans  provide for payment of a
                     prepayment  charge.  Prepayment charges may reduce the rate
                     of  prepayment  on the mortgage  loans until the end of the
                     period  during which such  prepayment  charges  apply.  See
                     "Description   of   the   Mortgage    Pool--Mortgage   Pool
                     Characteristics"   in  this   prospectus   supplement   and
                     "Maturity   and   Prepayment    Considerations"    in   the
                     prospectus.]

The yield on your    The offered certificates of each class have
certificates will    different yield considerations and different
be affected by the   sensitivities to the rate and timing of
specific             principal distributions.  The following is a
characteristics      general discussion of yield considerations and
that apply to that   prepayment sensitivities of each class.
class, discussed
below.               See "Certain Yield and Prepayment
                     Considerations" in this prospectus supplement.

   Class A           The Class A Certificates are subject to various
Certificates         priorities for payment of principal.
                     Distributions of principal on the Class A
                     Certificates with an earlier priority of
                     payment will be affected by the rates of
                     prepayment of the mortgage loans early in the
                     life of the mortgage pool.  Those classes of
                     Class A Certificates with a later priority of
                     payment will be affected by the rates of
                     prepayment of the mortgage loans experienced
                     both before and after the commencement of
                     principal distributions on those classes.

                     See    "Description    of    the    Certificates--Principal
                     Distributions   on  the  Class  A  Certificates"   in  this
                     prospectus supplement.

   [Class A-1        The interest rate on the Class A-1 Certificates
   Certificates      will vary with One-Month LIBOR.   Therefore,
                     the yield to investors on the Class A-1  Certificates  will
                     be  sensitive  to  fluctuations  in  the  level  of  LIBOR.
                     Investors   should  consider  whether  this  volatility  is
                     suitable to their investment needs.]

                     The Class A-1  Certificates may not always receive interest
                     at a rate  equal to  One-Month  LIBOR  plus the  applicable
                     margin.  If the weighted  average of the net mortgage rates


                                      S-14
<PAGE>

                     on the mortgage loans is less than One-Month LIBOR plus the
                     applicable  margin,  the  interest  rate on the  Class  A-1
                     Certificates will be reduced to that weighted average rate.
                     Thus, the yield to investors in the Class A-1  Certificates
                     will be sensitive to fluctuations in the level of One-Month
                     LIBOR and may be adversely  affected by the  application of
                     the  weighted  average  net  mortgage  rate on the  related
                     mortgage  loans . The prepayment of the mortgage loans with
                     higher net  mortgage  rates may result in a lower  weighted
                     average net mortgage rate. If on any distribution  date the
                     application  of the  weighted  average  net  mortgage  rate
                     results in an interest  payment lower than One-Month  LIBOR
                     plus the  applicable  margin on the Class A-1  Certificates
                     during the related  interest  accrual period,  the value of
                     those   certificates  may  be  temporarily  or  permanently
                     reduced.  In a rising interest rate environment,  the Class
                     A-1  Certificates  may  receive  interest  at the  weighted
                     average net mortgage rate for a protracted  period of time.
                     In  addition,  in such a  situation,  there  would  be less
                     excess  interest  payments on the  mortgage  loans to cover
                     losses and to create additional overcollateralization.

   [Class A-3       It is not expected that the Class A-3
   Certificates     Certificates will receive any distributions of
                    principal until the  distribution  date  _______________  in
                    _______________,  Until the distribution date in , the Class
                    A-3   Certificates   may  receive  a  portion  of  principal
                    prepayments  that is  smaller  than  its pro  rata  share of
                    principal prepayments.]

[Risks Particular
to Multifamily
Properties:]

[Reductions in       [  ] mortgaged properties, securing mortgage
occupancy and        loans that represent [  ]% of the initial pool
rent levels on       balance, are multifamily rental properties. A
multifamily          decrease in occupancy or rent levels could
properties could     result in realized losses on the mortgage
adversely affect     loans. Occupancy and rent levels on multifamily
their value and      properties may be adversely affected by:
cash flow
                     o  local,  regional or national economic conditions,  which
                        may limit the  amount  of rent that can be  charged  for
                        rental  units or result in a  reduction  in timely  rent
                        payments;

                     o  construction of additional housing units
                        in the same market;

                                      S-15
<PAGE>

                     o  local military base or
                        industrial/business closings;

                     o  developments at local colleges and
                        universities;

                     o  national, regional and local politics,
                        including current or future rent
                        stabilization and rent control laws and
                        agreements;

                     o  trends in the senior housing market;

                     o  the level of mortgage interest rates,
                        which may encourage tenants in multifamily
                        rental properties to purchase housing; and

                     o  lack of amenities, unattractive physical
                        attributes or bad reputation of the
                        mortgaged property.]

[Student housing     [  ] of the mortgaged properties, securing
concentrations       mortgage loans that represent [  ]% of the
may affect cash      initial pool balance, are student housing or
flow of a            have high concentrations of student tenants. In
multifamily          addition to other multifamily real estate
property             risks, student housing risks include:

                     o  increased  influence of economic,  social,  governmental
                        and demographic  factors as they relate to the number of
                        students  attending colleges and universities in need of
                        student housing;

                     o     reliance upon the well-being of the
                        colleges or universities to which the
                        facilities relate;

                     o  student  housing  facilities  are subject to competition
                        from  colleges  and   universities   as  well  as  other
                        providers of student  housing and  physical  layouts may
                        not be readily  convertible to  traditional  multifamily
                        use;

                     o  maintenance and insurance costs of
                        student housing can exceed the typical costs
                        of other multifamily housing;

                     o  tenants or sub-tenants are individuals
                        who often have little or no credit history,
                        may not have parental guarantees and are not
                        tied to the local community; and

                     o  turnover of tenants or  sub-tenants  can be  significant
                        and  student  housing  is less  utilized  or  subject to
                        reduced rents during summer months.

                     [ ] mortgaged properties, consisting principally of student
                     housing, securing mortgage loans that represent [ ]% of the
                     initial  pool balance are  primarily  leased to one tenant,
                     which  increases the adverse  effect of a tenant default or
                     lease   termination.

                                      S-16
<PAGE>

                     See  "Description  of  the  Mortgage
                     Pool--Significant  Mortgage  Loans--[ ]" in this prospectus
                     supplement  and  "--Losses  may be caused by tenant  credit
                     risk on the mortgage loans" below.]

[Restrictions        Tax credit, and city, state and federal housing
imposed on           subsidies or similar programs may apply to
multifamily          multifamily properties. The limitations and
properties by        restrictions imposed by these programs could
government           result in realized losses on the mortgage loans
programs could       that may be allocated to your class of
also adversely       certificates. These programs may include:
affect their
value and cash       o     rent limitations that could adversely
flow                    affect the ability of borrowers to increase
                        rents to maintain the condition of their
                        mortgaged properties and satisfy operating
                        expenses; and

                     o  tenant income restrictions that may reduce the number of
                        eligible  tenants  in  those  mortgaged  properties  and
                        result in a reduction in occupancy rates.

                     The  differences  in rents between  subsidized or supported
                     properties and other  multifamily  rental properties in the
                     same area may not be a sufficient  economic  incentive  for
                     some  eligible   tenants  to  reside  at  a  subsidized  or
                     supported property that may have fewer amenities or be less
                     attractive as a residence.]

[Risks Particular
to Office
Properties:]

[Economic decline    [  ] mortgaged properties, securing mortgage
in tenant            loans that represent [  ]% of the initial pool
businesses or        balance, are office properties.
changes in
demographic          Economic decline in the businesses operated by
conditions could     the tenants of office properties may increase
adversely affect     the likelihood that a tenant may be unable to
the value and        pay its rent, which could result in realized
cash flow from       losses on the mortgage loans. A number of
office properties    economic and demographic factors may adversely
                     affect the value of office properties,
                     including:

                     o  the quality of the tenants in the
                        building;

                     o  the physical attributes of the building
                        in relation to competing buildings;

                     o  access to transportation;

                     o  the availability of tax benefits;

                     o  the strength and stability of businesses
                        operated by the tenant or tenants;

                                      S-17
<PAGE>

                     o  the desirability of the location for
                        business; and

                     o  the cost of  refitting  office  space for a new  tenant,
                        which is  often  significantly  higher  than the cost of
                        refitting other types of properties for new tenants.

                     These risks may be increased if revenue depends on a single
                     tenant,  if the property is owner-occupied or if there is a
                     significant   concentration  of  tenants  in  a  particular
                     business  or  industry.  [ ] of  the  mortgaged  properties
                     representing  [ ]% of the initial  pool balance are secured
                     by single tenant office  properties.  For a description  of
                     risk  factors  relating to single  tenant  properties,  see
                     "--Losses  may be  caused  by  tenant  credit  risk  on the
                     mortgage loans" below.]

[Competition with    Competition from other office properties in the
other office         same market could decrease occupancy or rental
properties could     rates at office properties. Decreased occupancy
also adversely       could result in realized losses on the mortgage
affect the value     loans. Competition is affected by a property's
and cash flow        age, condition, design, such as floor sizes and
from office          layout, location, access to transportation and
properties           ability to offer amenities to its tenants,
                     including  sophisticated  building  systems,  such as fiber
                     optic  cables,   satellite  communications  or  other  base
                     building technological features.]

[Risks Particular
to Retail
Properties:]

[A significant       [  ] mortgaged properties, securing mortgage
tenant ceasing to    loans that represent [  ]% of the initial pool
operate at a         balance, are retail properties.
retail property
could adversely      A significant tenant ceasing to do business at
affect its value     a retail property could result in realized
and cash flow        losses on the mortgage loans. The loss of a
                     significant  tenant  may be  the  result  of  the  tenant's
                     voluntary  decision not to renew a lease or to terminate it
                     in accordance with its terms,  the bankruptcy or insolvency
                     of the tenant,  the tenant's general  cessation of business
                     activities or for other reasons. There is no guarantee that
                     any tenants  will  continue to occupy  space in the related
                     retail property.

                     Some component of the total rent paid by retail tenants may
                     be tied to a percentage  of gross sales.  As a result,  the
                     correlation  between the success of tenant  businesses  and
                     property  value is more direct for retail  properties  than
                     other types of commercial property.  Significant tenants or
                     anchor tenants at a retail  property play an important part
                     in generating customer traffic and making a retail property
                     a desirable  location for other  tenants at that  property.
                     Some  tenants  at  retail  properties  may be  entitled  to
                     terminate  their  leases or pay

                                      S-18
<PAGE>

                    reduced rent if an anchor tenant  ceases  operations at that
                    property.  If anchor stores in a mortgaged  property were to
                    close,  the borrower  may be unable to replace  those anchor
                    tenants in a timely  manner on similar  terms,  and customer
                    traffic  may be  reduced,  possibly  impacting  sales at the
                    remaining  retail  tenants.  A  retail  "anchor  tenant"  is
                    typically  understood  to be a tenant that is larger in size
                    and  is  important  in  attracting  customers  to  a  retail
                    property,  whether  or not it is  located  on the  mortgaged
                    property.

                     These risks may be increased  when the property is a single
                     tenant   property.   [  ]  of  the   mortgaged   properties
                     representing  [ ]% of the initial  pool  balance are single
                     tenant retail properties. For a description of risk factors
                     relating to single tenant properties,  see "--Losses may be
                     caused by tenant credit risk on the mortgage loans" below.]

[Retail              Changes in consumer preferences and market
properties are       demographics may adversely affect the value and
vulnerable to        cash flow from retail properties, particularly
changes in           properties with a specialty retail focus. You
consumer             may experience losses on the certificates due
preferences          to these changes. Retail properties are
                     particularly vulnerable to changes in consumer
                     preferences and market demographics that may
                     relate to:

                     o     changes in consumer spending patterns;

                     o     local competitive conditions, such as an
                        increased supply of retail space or the
                        construction of other shopping centers;

                     o     the attractiveness of the properties and
                        the surrounding neighborhood to tenants and
                        their customers;

                     o     the public perception of the safety of
                        the neighborhood; and

                     o     the need to make major repairs or
                        improvements to satisfy major tenants.]
[Competition from    Retail properties face competition from sources
alternative          outside their local real estate market.
retail               Catalogue retailers, home shopping networks,
distribution         the internet, telemarketing and outlet centers
channels may         all compete with more traditional retail
adversely affect     properties for consumer dollars. These
the value and        alternative retail outlets are often
cash flow from       characterized by lower operating costs.
retail properties    Continued growth of these alternative retail
                     outlets could adversely affect the rents collectible at the
                     retail  properties which secure mortgage loans in the trust
                     and result in realized losses on the mortgage loans.]

                                      S-19
<PAGE>

[Risks Particular
to Industrial
Properties:]

[Changes in          [  ] mortgaged properties, securing mortgage
economic and         loans that represent [  ]% of the initial pool
demographic          balance, are industrial properties. Economic
conditions could     decline in the businesses operated by the
adversely affect     tenants of industrial properties could result
the value and        in realized losses on the mortgage loans that
cash flow from       may be allocated to your class of certificates.
industrial
properties           These risks are similar to those of tenants of
                     office properties.  Industrial properties,  however, may be
                     more  dependent on a single  tenant.  [ ] of the  mortgaged
                     properties  representing  [ ]% of the initial  pool balance
                     are secured by single tenant industrial  properties.  For a
                     description of risk factors relating to office  properties,
                     see "--Economic  decline in tenant businesses or changes in
                     demographic conditions could adversely affect the value and
                     cash flow from office properties," and for a description of
                     risk  factors  relating to single  tenant  properties,  see
                     "--Losses  may be  caused  by  tenant  credit  risk  on the
                     mortgage loans" below.]

[Restrictions        Site characteristics at industrial properties
imposed by site      may impose restrictions that could cause
characteristics      realized losses on the mortgage loans that may
could also           be allocated to your class of certificates.
adversely affect     Site characteristics which affect the value of
the value and        an industrial property include:
cash flow from
industrial           o     clear heights;
properties
                     o     column spacing;

                     o     number of bays and bay depths;

                     o     truck turning radius;

                     o     divisibility;

                     o     zoning restrictions; and

                     o     overall functionality and accessibility.

                     An  industrial  property  requires  availability  of  labor
                     sources,  proximity to supply  sources and  customers,  and
                     accessibility  to rail  lines,  major  roadways  and  other
                     distribution channels.]

[Restrictions        Properties used for many industrial purposes
imposed by           are more prone to environmental concerns than
increased            other property types. For a description of risk
environmental        factors relating to environmental risks, see
risks could also     "--Adverse environmental conditions on the
adversely affect     mortgaged property may reduce or delay your
the value and        payments" above.]

                                      S-20
<PAGE>

cash flow from
industrial
properties

[Risks Particular
to Hospitality
Properties:]

[Reductions in       [  ] mortgaged properties, securing mortgage
room rates or        loans that represent [  ]% of the initial pool
occupancy at a       balance, are hospitality properties. A decrease
hospitality          in room rates or occupancy at hospitality
property could       properties could result in realized losses on
adversely affect     the mortgage loans that may be allocated to
its value and        your class of certificates. Room rates and
cash flow            occupancy levels may depend upon the following
                     factors.

                     o  The  proximity  of  a  hospitality   property  to  major
                        population centers or attractions.

                     o  Adverse local,  regional or national economic conditions
                        or the construction of competing hospitality properties.
                        Because hospitality  property rooms typically are rented
                        for  short   periods  of  time,   the   performance   of
                        hospitality  properties  tends to be affected by adverse
                        economic  conditions and  competition  more quickly than
                        other commercial properties.

                     o  A hospitality  property's  ability to attract  customers
                        and a portion of its revenues may depend on its having a
                        liquor license. A liquor license may not be transferable
                        if a foreclosure on the mortgaged property occurs.

                     o  In many  parts of the  country  the  hotel  and  lodging
                        industry is seasonal in nature.  Seasonality  will cause
                        periodic   fluctuations  in  room  and  other  revenues,
                        occupancy levels, room rates and operating expenses.

                     o  The  viability  of  hospitality   properties   that  are
                        franchisees of national or regional hotel chains depends
                        in large part on the  continued  existence and financial
                        strength of the franchisor. The public perception of the
                        franchise service mark and the duration of the franchise
                        license agreement are also important.  If the franchisee
                        defaults  on its debt,  the trustee may be unable to use
                        the  franchise   license  without  the  consent  of  the
                        franchisor due to restrictions  on transfers  imposed by
                        the franchise license agreements.]

[Risks Associated
with Tenants

                                      S-21
<PAGE>

Generally:]

[Losses may be       Cash flow or value of a mortgaged property
caused by tenant     could be reduced if tenants are unable to meet
credit risk on       their lease obligations or become insolvent.
the mortgage loans   The inability of tenants to meet their
                     obligations may result in realized losses on
                     the mortgage loans that may be allocated to
                     your class of certificates.


                     o  If tenant  sales in  retail  properties  decline,  rents
                        based on sales will  decline.  Tenants  may be unable to
                        pay their rent or other  occupancy  costs as a result of
                        poor cash flow due to sales  declines  or the  amount of
                        the gross sales component of rent will be reduced.  If a
                        tenant defaults,  the borrower may experience delays and
                        costs in enforcing the lessor's rights.

                     o  If a tenant were to become  insolvent and subject to any
                        bankruptcy  or similar  law,  the  collection  of rental
                        payments  could be  interrupted  and  foreclosure on the
                        mortgaged  property  made more  difficult.  See "Certain
                        Legal    Aspects    of   the    Mortgage    Loans    and
                        Contracts--Anti-Deficiency    Legislation    and   Other
                        Limitations on Lenders" in the prospectus.

                     These risks may be increased  when the property is a single
                     tenant  property,   is   owner-occupied  or  is  leased  to
                     relatively  few  tenants.  [ ]of the  mortgaged  properties
                     representing  [ ]% of the initial  pool balance are secured
                     by single tenant properties.]

[Losses may be      The income from and market value of retail,
caused by the       office, multifamily and industrial properties
expiration of or    would decline if space leases expired or
tenant defaults     terminated, or tenants defaulted and the
on leases           borrowers were unable to renew the leases or
                    relet the space on comparable terms.

                   If  space  is  not  renewed  at all  or is  not  renewed  on
                   favorable terms, the trust may experience realized losses on
                   the  mortgage  loans that may be  allocated to your class of
                   certificates.

                   Even if borrowers  successfully  relet vacated  space,  the
                   costs   associated   with   reletting,   including   tenant
                   improvements, leasing commissions and free rent, can exceed
                   the amount of any reserves  maintained for that purpose and
                   reduce cash flow from the  mortgaged  properties.  Although
                   many of the mortgage loans require the borrower to maintain
                   escrows for leasing  expenses,  there is no guarantee  that
                   these reserves will be sufficient.]

[Tenant            The bankruptcy or insolvency of a major tenant,
bankruptcy         such as an anchor tenant, or a number of
entails risks      smaller tenants, may adversely affect the
                   income  produced  by a  mortgaged  property  and  result in


                                      S-22
<PAGE>

                     realized losses on the mortgage loans that may be allocated
                     to your class of certificates. Under the federal bankruptcy
                     code, a tenant has the option of assuming or rejecting  any
                     unexpired  lease.  If the tenant  rejects  the  lease,  the
                     landlord's claim for breach of the lease would be a general
                     unsecured  claim  against  the  tenant,  unless  collateral
                     secures the claim. The claim would be limited to the unpaid
                     rent  reserved  under the lease for the periods  before the
                     bankruptcy  petition  or  earlier  surrender  of the leased
                     premises  that are  unrelated  to the  rejection,  plus the
                     greater of one year's rent or 15% of the remaining reserved
                     rent,  but  not  more  than  three  years'  rent.  Even  if
                     provisions  in  the  lease   prohibit   assignment,   in  a
                     bankruptcy,  the  tenant  may  assign  the lease to another
                     entity that could be less  creditworthy than the tenant may
                     have been at the time of  origination of the mortgage loan.
                     See  "Certain  Legal  Aspects  of the  Mortgage  Loans  and
                     Contracts" in the prospectus.]

[Losses may be      [Losses may be realized on the mortgage  loans
caused by           that may be allocated to your class of  inadequate.
inadequate          certificates if property management is property inadequate.
property            The  property  manager  is  responsible for the
management          following activities:

                     o  responding to changes in the local market;

                     o  planning and implementing the rental
                        structure, including establishing levels of
                        rent payments; and

                     o  ensuring that maintenance and capital
                        improvements are carried out in a timely
                        fashion.

                     Sound  property   management   controls   costs,   provides
                     appropriate   service   to   tenants   and   ensures   that
                     improvements are maintained.  Sound property management can
                     also maintain cash flow, reduce vacancy, leasing and repair
                     costs and  preserve  building  value.  Property  management
                     errors can impair the long-term viability of a property.]

[Conflicts of        Managers  of  mortgaged  properties  and the
interests between    borrowers  may  experience  conflicts of
property managers    interest in the management or ownership of mortgaged
and owners           properties.  These  conflicts of interest could result in
losses               losses result in realized losses on the mortgage loans
                     that may be allocated to your class of
                     certificates. These conflicts of interests may
                     exist because:

                     o  the mortgaged properties may be managed
                        by property managers affiliated with the
                        borrowers;

                     o  the mortgaged properties may be managed
                        by property managers who also manage other
                        properties that compete with the mortgaged
                        properties; and

                                      S-23
<PAGE>

                     o  affiliates  of the  managers  or the  borrowers,  or the
                        managers or the  borrowers  or both,  may also own other
                        properties, including competing properties.]

[Limited alternative[  ]  mortgaged   properties,   securing  mortgage
uses of other       loans that represent approximately [ ]% of the initial
property types      pool balance,  are "special purpose" properties
affect their        that have limited alternative uses.   "Special
value and cash
flow
                    "Special  purpose"  limitations  could  result  in cash flow
                    realized  losses on the mortgage loans that maybe  allocated
                    to your class of certificates. Mortgage loans
                    secured  by  other  property  types,   including  mixed  use
                    properties,  may pose  risks not  associated  with  mortgage
                    loans  secured by liens on other  types of  income-producing
                    real estate.]

[Losses may          An appraisal was conducted for each mortgaged
result if the        property in connection with its origination,
servicer is          and the loan-to-value ratios as of the cut-off
unable to sell a     date referred to in this prospectus supplement
mortgaged            are based on the appraisals. If the servicer
property securing    forecloses on a mortgaged property and realizes
a defaulted          liquidation proceeds that are less than the
mortgage loan for    appraised value, a realized loss on the
its appraised        mortgage loan could result that may be
value                allocated to your class of certificates.

                     Appraisals  are not  guarantees of present or future value.
                     Appraisals   seek  to  establish  the  amount  a  typically
                     motivated buyer would pay a typically  motivated  seller as
                     of a designated  date.  This amount could be  significantly
                     higher  than  the  amount  obtained  from  the  sale  of  a
                     mortgaged  property under a distress or liquidation sale at
                     a  subsequent  date.  If a borrower  defaults on a mortgage
                     loan,  the  servicer  may be  unable  to sell  the  related
                     mortgaged property for its appraised value.

                     Appraisals  are  estimates  of  value  at the  time  of the
                     appraisal   based  on  the  analysis  and  opinion  of  the
                     appraiser.  The values of the mortgaged properties may have
                     changed  significantly  since the appraisal was  performed.
                     Most  appraisals  have not been updated  since the mortgage
                     loan was originated.]

[Subordinate         [  ] of the mortgaged properties securing [  ]%
financing on the     of the initial pool balance are encumbered by
mortgaged            subordinate debt that is not part of the
property may         mortgage pool. The existence of subordinate
increase risks       indebtedness may adversely affect the
                     borrower's  financial  viability or the  enforcement of its
                     lender's  security  interest in the mortgaged  property and
                     result in realized losses on the mortgage loans that may be
                     allocated  to your class of  certificates.  The  borrower's
                     financial  viability  or the  enforcement  of the  lender's
                     security   interest   could  be   adversely   affected   by



                                      S-24
<PAGE>

                subordinate financing because:

                     o  refinancing the mortgage loan at maturity
                        for the purpose of making any balloon
                        payments may be more difficult;

                     o  reduced cash flow could result in
                        deferred maintenance; and

                     o  if  the  borrower  defaults  after  the  holder  of  the
                        subordinated  debt files for  bankruptcy or is placed in
                        involuntary  receivership,  foreclosing on the mortgaged
                        property could be delayed.

                     The holder of any material  subordinate debt on each of the
                     mortgaged  properties  has agreed not to  foreclose  for so
                     long as the mortgage loan is  outstanding  and the trust is
                     not  pursuing a  foreclosure  action.  All of the  mortgage
                     loans either  prohibit the borrower  from  encumbering  the
                     mortgaged  property with additional secured debt or require
                     the  consent  of the  holder  of the first  lien  before so
                     encumbering  the  mortgaged  property.  A violation of this
                     prohibition,  however,  may not  become  evident  until the
                     mortgage loan  otherwise  defaults.  For a  description  of
                     subordinate debt relating to the mortgaged properties,  see
                     "Description  of  the  Mortgage  Pool--Secured  Subordinate
                     Financing" in this prospectus supplement.]

[Mezzanine debt     The direct  parents of some  borrowers have pledged
secured by equity   or are  permitted to pledge their equity interest
in the borrower     in the  borrower to secure mezzanine debt incurred by
may increase risk   the parent or other obligations.  The  existence  of  this
                    indebtedness could adversely affect the financial  viability
                    of such  borrower or the  availability  of proceeds from the
                    operation   of  the   property   to  fund   items   such  as
                    replacements,   tenant   improvements   or   other   capital
                    expenditures.  The value of the equity in the borrower  held
                    by the  sponsoring  entities of the  borrower  could also be
                    adversely   affected   by   the   existence   of   mezzanine
                    indebtedness or other obligations.  There is a risk that any
                    holder of  mezzanine  debt may  attempt to use its rights as
                    owner of the  mezzanine  loan to protect  itself  against an
                    exercise of rights by the lender  under the  mortgage  loan.
                    For  a  description   of  mezzanine  debt  relating  to  the
                    mortgaged   properties  see  "Description  of  the  Mortgage
                    Pool--Unsecured Subordinate and Mezzanine Financing" in this
                    prospectus supplement.]

[Related Borrowers  Some  borrowers   under  the  mortgage  loans  are
may make losses     affiliated  or under common  control with one
on the mortgage     another.  When borrowers are related, any
loans more severe   adverse  circumstances  relating  to one  borrower
                    or its  affiliates,  and  affecting  one mortgage
                    loan or  mortgaged  property,  also can affect the  related
                    borrower's  mortgage  loans or mortgaged  properties  which
                    could make  losses  more likely or more severe or both than


                                      S-26
<PAGE>

                     would be the case if there were no related borrowers.

                     For  example,  a  borrower  that owns or  controls  several
                     mortgaged  properties and experiences  financial difficulty
                     at one mortgaged property might defer maintenance at one or
                     more other mortgaged properties to satisfy current expenses
                     of   the   mortgaged   property   experiencing    financial
                     difficulty.  Alternatively,  the borrower  could attempt to
                     avert  foreclosure  by filing a  bankruptcy  petition.  The
                     bankruptcy  or  insolvency of one borrower or its affiliate
                     could have an adverse effect on the operation of all of the
                     mortgaged  properties of that  borrower and its  affiliates
                     and on the ability of those mortgaged properties to produce
                     sufficient  cash  flow to  make  required  payments  on the
                     mortgage  loans.  The  insufficiency  of cash  flows  could
                     result in realized losses on the mortgage loans that may be
                     allocated to your class of certificates. See "Certain Legal
                     Aspects      of      the      Mortgage       Loans      and
                     Contracts--Anti-Deficiency     Legislation     and    Other
                     Limitations on Lenders" in the prospectus.]

[Larger-than-       Several   mortgage   loans,   either individually or
average balance     together  with  other mortgage   loans  with  which   they
loans may make      cross-collateralized,  have outstanding severe balances
losses more severe  that are substantially higher than the average
                    outstanding  balance.  If a mortgage pool includes
                    mortgage  loans  with  larger-than-average   balances,  any
                    realized    losses    on   the    mortgage    loans    with
                    larger-than-average balances could be more severe, relative
                    to the  size of the  pool,  than  would  be the case if the
                    aggregate  balance  of the pool  were  distributed  among a
                    larger number of mortgage loans.]

[Losses could        [  ] mortgage loans, representing [  ]% of the
result from          initial pool balance, are cross-collateralized
limitation on        with one or more other mortgage loans.
enforceability of    Cross-collateralization arrangements involving
cross-collateraliza-more than one borrower could be challenged as a
tion                 fraudulent  conveyance by creditors of a borrower or by the
                     representative or the bankruptcy  estate of a borrower,  if
                     that borrower were to become a debtor in a bankruptcy case.

                     The additional security provided by cross-collateralization
                     would not be available if a court determines that the grant
                     was  a  fraudulent  conveyance.   If  a  creditor  were  to
                     successfully assert a fraudulent  conveyance claim it could
                     result in realized losses on the mortgage loans that may be
                     allocated to your class of certificates. See "Certain Legal
                     Aspects      of      the      Mortgage       Loans      and
                     Contracts--Anti-Deficiency     Legislation     and    Other
                     Limitations on Lenders" in the prospectus and  "Description
                     of the Mortgage  Pool--Terms and Conditions of the Mortgage
                     Loans--Related  Borrowers,   Cross-Collateralized  Mortgage
                     Loans  and  Mortgage  Loans   Collateralized

                                      S-27
<PAGE>

                    by Multiple Properties" in this prospectus supplement.]

[Tax considerations [Payment  of  taxes  on any  net  income  from  "foreclosure
related to          property" acquired by the trust will reduce the net proceeds
foreclosure         available for  distribution  to  certificateholders.  If the
may reduce payments trust  acquires a mortgaged  property after a default on the
to certificate-     related  mortgage loan under a foreclosure  or delivery of a
holders             deed in lieu of  foreclosure,  that property will be

                     considered "foreclosure property" under the tax rules
                     applicable  to real  estate mortgage investment conduits.
                     It  will  continue  to  be considered  "foreclosure
                     property"  for a period  of three full years after
                     the  taxable  year of  acquisition  by the
                     trust, with possible  extensions.  Any net income from this
                     "foreclosure  property," other than qualifying  "rents from
                     real  property,"  will  subject  the real  estate  mortgage
                     investment conduit containing the mortgage loans to federal
                     and  possibly  state or  local  tax on that  income  at the
                     highest marginal corporate tax rate.]

[State law           Some jurisdictions, including California, have
limitations on       laws that prohibit more than one "judicial
remedies             action" to enforce a mortgage, and some courts
                     have viewed the term "judicial action" broadly. The pooling
                     and servicing  agreement  will require the servicer and any
                     replacement  special servicer to obtain legal advice before
                     enforcing  any rights under the mortgage  loans that relate
                     to  properties  where  the  rule  could be  applicable.  In
                     addition, the servicer and any replacement special servicer
                     may be required to foreclose on  properties in states where
                     the  "one  action"  rules  apply  before   foreclosing   on
                     properties located in states where judicial  foreclosure is
                     the only permitted method of foreclosure.

                     Because  of  these  considerations,   the  ability  of  the
                     servicer and any replacement  special servicer to foreclose
                     on the mortgage loans may be limited by the  application of
                     state  laws.  Actions  could  also  subject  the  trust  to
                     liability  as  a  "mortgagee-in-possession"  or  result  in
                     equitable subordination of the claims of the trustee to the
                     claims of other  creditors  of the  borrower.  The servicer
                     will be required to consider these factors in deciding what
                     alternative to pursue after a default.]

[Bankruptcy rules   [Operation  of the federal  bankruptcy  code and the related
may limit the       state  laws may  interfere  with the  ability of a lender to
ability of a        foreclose upon a lender mortgaged property and to take other
lender to enforce   actions to enforce its remedies against the borrower or
remedies            the mortgaged property. For a description of
                    risks related to bankruptcy, see "Certain Legal
                    Aspects of the Mortgage Loans and Contracts--Anti-Deficiency
                    Legislation and Other Limitations on Lenders" in
                    the prospectus.]

[Increases in        [  ] mortgaged properties securing mortgage

                                      S-27
<PAGE>

ground rents may     loans, which represent [  ]% of the initial
adversely affect     pool balance, are subject solely to the lien of
a borrower's         a mortgage on the applicable borrower's
ability to make      leasehold interest under a ground lease. [  ]
payments under a     mortgaged properties securing mortgage loans,
related mortgage     which represent [  ]% of the initial pool
loan and cause       balance, are subject to the lien of either a
realized losses      mortgage on both the borrower's leasehold
on the mortgage      interest and the ground lessor's fee simple
loans                interest in the mortgaged property or a
                     mortgage on the borrower's  leasehold interest in a portion
                     of the  mortgaged  property and the  borrower's  fee simple
                     interest  in  the   remaining   portion  of  the  mortgaged
                     property.

                     Mortgage  loans secured by leasehold  interests may provide
                     for the  resetting  of ground  lease rents based on factors
                     such as the  fair  market  value of the  related  mortgaged
                     property or prevailing interest rates. Bankruptcy rules may
                     limit the ability of a lender to enforce remedies.

                     The bankruptcy of a lessor or a lessee under a ground lease
                     could  result  in  losses  on  the  mortgage  loans.   Upon
                     bankruptcy  of a lessor or a lessee  under a ground  lease,
                     the debtor  entity has the right to assume and  continue or
                     reject and terminate the ground  lease.  Section  365(h) of
                     the federal  bankruptcy  code permits a ground lessee whose
                     ground  lease is  rejected  by a debtor  ground  lessor  to
                     remain in possession of its leased  premises under the rent
                     reserved in the lease for the term,  including  renewals of
                     the  ground  lease.  The  ground  lessee,  however,  is not
                     entitled to enforce the  obligation of the ground lessor to
                     provide any services  required under the ground lease. If a
                     ground lessee/borrower in bankruptcy rejected any or all of
                     its ground leases,  the leasehold  mortgagee would have the
                     right to succeed to the ground  lessee/borrower's  position
                     under the lease only if the ground lessor had  specifically
                     granted the mortgagee that right.  If the ground lessor and
                     the  ground  lessee/borrower  are  involved  in  concurrent
                     bankruptcy  proceedings,  the  trustee  may  be  unable  to
                     enforce the bankrupt ground lessee/borrower's obligation to
                     refuse  to  treat a ground  lease  rejected  by a  bankrupt
                     ground lessor as  terminated.  If this  happened,  a ground
                     lease could be terminated notwithstanding lender protection
                     provisions  contained  therein or in the  mortgage.  If the
                     borrower's  leasehold  were to be terminated  after a lease
                     default, the leasehold mortgagee would lose its security.

                     Each of the ground  leases  related to the mortgage  loans,
                     however,  generally  contains the following  protections to
                     mitigate this risk:

                     o  It requires the lessor to give the  leasehold  mortgagee
                        notice of lessee  defaults  and an  opportunity  to cure
                        them.

                     o  It permits the leasehold estate to be assigned to and by

                                      S-28
<PAGE>

                       the leasehold mortgagee at and after a foreclosure sale.

                     o  It  contains   certain   other   protective   provisions
                        typically included in a "mortgageable" ground lease.

                     See  "Description of the Mortgage  Pool--Ground  Leases" in
                     this prospectus supplement.]

[Your payments       Noncompliance with zoning and building codes
may be reduced or    may cause the borrower to experience cash flow
delayed if zoning    delays and shortfalls. These delays or
and building code    shortfalls in payments could result in realized
noncompliance on     losses in the mortgage loans that may be
the mortgaged        allocated to your class of certificates.
properties
adversely affects    Each seller has taken steps to establish that
the ability of       the use and operation of the related mortgaged
borrowers to make    properties securing the mortgage loans are in
payments on the      compliance in all material respects with all
mortgage loans       applicable zoning, land-use, building, fire and
                     health ordinances, rules, regulations, and orders. Evidence
                     of this  compliance  may be in the form of legal  opinions,
                     certifications  from  government  officials,  title  policy
                     endorsements or  representations by the related borrower in
                     the related  mortgage loan  documents.  These steps may not
                     have revealed all possible violations.  Some violations may
                     exist at any particular mortgaged property,  but the seller
                     does not consider those defects known to it to be material.

                     In  many  cases,  the  use,  operation  or  structure  of a
                     mortgaged  property  constitutes a permitted  nonconforming
                     use or  structure  that may not be rebuilt  to its  current
                     state  if a  material  casualty  event  occurs.  Generally,
                     insurance  proceeds  will be  available  in the  event of a
                     casualty  affecting the mortgaged  property.  The insurance
                     proceeds   will  be  available  to  rebuild  the  mortgaged
                     property or for  application  to the  mortgage  loan.  If a
                     mortgaged  property  could not be  rebuilt  to its  current
                     state or its  current use were no longer  permitted  due to
                     building   violations   or   changes  in  zoning  or  other
                     regulations,  then the borrower might  experience cash flow
                     delays and shortfalls as referred to above.]

[Changes in          As the mortgage loans are repaid, liquidated or
concentrations of    repurchased, the characteristics of the pool
borrowers,           may vary. For example, the relative
mortgage loans or    concentrations of properties, geographic
property             location, property characteristics, and number
characteristics      of borrowers and affiliated borrowers may
may increase the     change. Classes that have a lower priority for
likelihood of        payment of principal are more likely to be
losses on the        exposed to risks associated with any of these
certificates         changes.]



                                      S-29
<PAGE>

[Compliance with     If the borrower were required to pay expenses
the Americans        and fines imposed by the Americans with
with Disabilities    Disabilities Act of 1990, the amount available
Act may reduce       to make payments on the mortgage loan would be
payments to          reduced. Reductions in funds available to make
certificateholders   mortgage loan payments could result in realized
                     losses on the mortgage  loans that may be allocated to your
                     class   of   certificates.   Under   the   Americans   with
                     Disabilities Act, all public accommodations are required to
                     meet  federal  requirements  related  to access  and use by
                     disabled persons. If the mortgaged properties do not comply
                     with this law, the borrowers may be required to incur costs
                     of compliance. Noncompliance could result in the imposition
                     of fines by the federal  government  or an award of damages
                     to private litigants.]

[Litigation  may     Legal  proceedings may be pending and, from
reduce payments to   time  to  time,  threatened,  against  the
certificates         borrowers and their affiliates relating to the business
                     of the borrowers and their affiliates, or arising
                     out of the ordinary course of that business.
                     This litigation could have a material adverse
                     effect on the distributions to
                     certificateholders.]

                                      S-30

<PAGE>


                                  INTRODUCTION

      The  Depositor  will  establish a trust with  respect to Series -__ on the
closing date, under a pooling and servicing  agreement among the depositor,  the
servicer and the trustee, dated as of the cut-off date. On the closing date, the
depositor  will  deposit  into the trust a pool of mortgage  loans that,  in the
aggregate, will constitute a mortgage pool, and that will be secured by first or
junior liens on one-to four-family residential properties.

      Some  capitalized  terms  used  in this  prospectus  supplement  have  the
meanings given below under "Description of the  Certificates--Glossary of Terms"
or in the prospectus under "Glossary."

                        DESCRIPTION OF THE MORTGAGE POOL

General

      The  mortgage  pool will  consist  of  mortgage  loans  with an  aggregate
principal balance  outstanding as of the cut-off date, after deducting  payments
of principal due on or before the cut-off  date,  of $ . The mortgage  loans are
secured by [first] [and junior  liens] on fee simple or  leasehold  interests in
[one-  to  four-family  residential][commercial][multifamily]  real  properties.
[___% of the  mortgage  loans  have a due date  other than the first day of each
month].  In each case, the property securing the mortgage loan is referred to as
the   mortgaged   property.   [The   mortgage   pool  will  consist  of  [fixed]
[adjustable]-rate  mortgage  loans with terms to  maturity  of not more than [ ]
years from the date of origination. [Approximately __% of the mortgage loans are
secured by second liens on the mortgaged  properties.]  All  percentages  of the
mortgage  loans  described  in  this   prospectus   supplement  are  approximate
percentages  by  aggregate  principal  balance  as of the  cut-off  date  unless
otherwise indicated.

      All of the mortgage loans were  purchased by the depositor  from, and will
be serviced by, [ ]. See "The Seller and Servicer" below.

      Under the terms of the pooling and  servicing  agreement,  the Seller will
make  representations  and warranties  with respect to the mortgage loans to the
trustee for the benefit of the certificateholders.

      To the extent that the Seller does not  repurchase a mortgage  loan in the
event of a breach of its  representations  and  warranties  with respect to that
mortgage  loan,  neither the  Depositor nor any other person will be required to
repurchase the mortgage loan.

[Balloon Loans

      [ ] of the  mortgage  loans,  which  represent  approximately  [ ]% of the
initial pool  balance,  are balloon  loans that provide for monthly  payments of
principal  based  on  amortization  schedules   significantly  longer  than  the
remaining terms of those mortgage loans.  As a result,  a substantial  principal
amount will be due and payable together with the corresponding  interest payment
on each  balloon  loan on its maturity  date,  unless the  borrower  prepays the
balloon loan before its maturity date.]

                                      S-31
<PAGE>

[Defeasance

      [ ]% of the mortgage loans secured by commercial  properties  provide that
after a specified  period,  if no default  exists under the mortgage  loan,  the
borrower may  exercise a defeasance  option to obtain the release of one or more
of the mortgaged properties,  from the lien of the mortgage upon satisfaction of
conditions, including that the borrower:

      (1)  pays on any due date

          o    all interest  accrued and unpaid on the principal  balance of the
               mortgage note to and, including that due date,

          o    all  other  sums,   excluding  scheduled  interest  or  principal
               payments not yet due and owing, due under the mortgage loan, and

          o    any costs and expenses related to the release,

      (2)  delivers or pledges to the trustee defeasance collateral

          o    that  consists  of  direct,   non-callable   obligations  of,  or
               non-callable  obligations,  fully guaranteed as to timely payment
               by, the United States of America; and

          o    that provides payments:

          o    on or before all successive scheduled payment dates from that due
               date to the related maturity date, and

          o    in an amount equal to or greater than the scheduled  payments due
               on   those   dates   under   the   mortgage    loan,    or,   for
               cross-collateralized  mortgage loans or mortgage loans secured by
               multiple mortgaged properties which permit defeasance,  an amount
               equal to not less  than the  portion  of the  scheduled  payments
               allocable to the released mortgaged property, and

      (3)  delivers a security  agreement  granting  the trust a first  priority
           security  interest  in the  defeasance  collateral  and an opinion of
           counsel to that effect.

      The mortgaged property will be released from the lien of the mortgage loan
and the defeasance collateral will be substituted as the collateral securing the
mortgage loan when these conditions are met.]

[Prepayment Provisions

      Each mortgage loan prohibits voluntary  principal  prepayments at any time
except during an open period  following the expiration of the lockout period and
defeasance  period  for that  mortgage  loan or  during a period  following  the
lockout period when any prepayment must be accompanied by a prepayment premium.

                                      S-32
<PAGE>

      Any prepayment  premiums actually  collected on the mortgage loans will be
distributed to the respective classes of  certificateholders  in the amounts and
priorities        described        under        "Description        of       the
Certificates--Distributions--Distributions   of  Prepayment  Premiums"  in  this
prospectus   supplement.   The  enforceability  of  provisions  similar  to  the
provisions  of the  mortgage  loans  providing  for the payment of a  prepayment
premium upon an involuntary  prepayment is unclear under the laws of a number of
states.  The  obligation  to  pay  a  prepayment  premium  with  an  involuntary
prepayment may not be enforceable  under applicable law or, if enforceable,  the
foreclosure proceeds may not be sufficient to make the payment.

      Liquidation  proceeds  recovered from any defaulted mortgage loan will, in
most  cases,  be  applied to cover  outstanding  servicing  expenses  and unpaid
principal and interest before being applied to cover any prepayment premium due.
The depositor makes no representation as to the  enforceability of the provision
of any mortgage loan requiring the payment of a prepayment  premium or as to the
collectability of any prepayment premium.  Generally, no prepayment premium will
be payable upon any mandatory prepayment of a mortgage loan caused by a casualty
or  condemnation.   See  "Certain  Legal  Aspects  of  the  Mortgage  Loans  and
Contracts--Default Interest and Limitations on Prepayments" in the prospectus.

      In most cases,  no  prepayment  premium will be payable upon any mandatory
prepayment  of  a  mortgage  loan  caused  by a  casualty  or  condemnation.  No
prepayment  premium will be payable with the  repurchase of a mortgage loan by a
seller for a breach of  representation or warranty or any failure to deliver any
related  documentation on the part of that seller. No prepayment premium will be
payable with the purchase of all of the mortgage loans and any REO properties in
connection  with the  termination  of the  trust  fund or with the  purchase  of
defaulted   mortgage  loans  by  the  servicer  or  any  holder  or  holders  of
certificates evidencing a majority interest in the controlling class.]

[Related Borrowers, Cross-Collateralized Mortgage Loans and Mortgage Loans
Collateralized by Multiple Properties

      [ ] mortgage loans, which represent [ ]% of the initial pool balance,  are
cross-collateralized  mortgage  loans  among  groups of related  borrowers.  [ ]
mortgage  loans,  other  than the  cross-collateralized  mortgage  loans,  which
represent [ ]% of the initial pool balance, are secured by one or more mortgages
encumbering  multiple  mortgaged  properties.  Each of these  mortgage  loans is
evidenced  by a  separate  mortgage  note,  and  is  not  treated  as a  set  of
cross-collateralized  mortgage  loans.  Because  of this,  the  total  number of
mortgage  loans in the mortgage pool is [ ], while the total number of mortgaged
properties in the mortgage pool is [ ]. In most cases,  we treat a mortgage loan
that is secured by mortgaged  properties that are located in more than one state
as an  individual  mortgage  loan,  except that when we describe the  geographic
concentration  and property  type  distribution  of the mortgage  pool, we treat
these  mortgage  loans as multiple  mortgage  loans that are allocated a cut-off
date  balance  based on the  allocated  loan  amount.  Losses  could result from
limitations on the enforceability of  cross-collateralization.  For a discussion
of risks  related to  cross-collateralized  loans,  see "Risk  Factors"  in this
prospectus supplement.

      [insert additional  disclosure regarding isolating  individual  properties
and  risks,   rights  and   obligations   of  the  parties  in  respect  of  the
cross-collateralized groups, as appropriate]

                                      S-33
<PAGE>

      In  addition  to the  cross-collateralized  loans and the  mortgage  loans
secured by multiple mortgaged properties,  some sets of mortgage loans were made
to borrowers who are affiliated or under common  control with one another.  None
of these sets of mortgage  loans  represents  more than [ ]% of the initial pool
balance.]

[Due-on-Sale and Due-on-Encumbrance Provisions

      All of the mortgage loans contain both due-on-sale and  due-on-encumbrance
clauses. With limited exceptions, these clauses either:

          o    permit the holder of the mortgage to  accelerate  the maturity of
               the related  mortgage loan if the borrower  sells or transfers or
               encumbers the mortgaged property in violation of the terms of the
               mortgage or other loan documents, or

          o    prohibit  the  borrower  from doing so without the consent of the
               holder of the mortgage.  See "--Secured Subordinate Financing" in
               this prospectus supplement.

      Some of the mortgage loans permit either:

          o    transfer  of  the  related   mortgaged   property  if   specified
               conditions  are  satisfied  or if the  transfer  is to a borrower
               reasonably acceptable to the lender, or

          o    transfers to specified parties related to the borrower.

      The servicer will determine,  in accordance  with the servicing  standard,
whether  to  exercise  any right the  holder of any  mortgage  may have  under a
due-on-sale or  due-on-encumbrance  clause to accelerate  payment of the related
mortgage loan or to withhold its consent to the transfer or  encumbrance  of the
mortgaged property.]

[Secured Subordinate Financing

      [ ] mortgage  loans  representing  [ ]% of the  initial  pool  balance are
secured by mortgaged properties known to be encumbered by subordinated debt that
is not part of the  mortgage  pool.  In all cases,  the  holder of any  material
subordinated  debt  has  agreed  not to  foreclose  for so long  as the  related
mortgage loan is outstanding and the trust is not pursuing a foreclosure action.
All  of  the  remaining   mortgage  loans  either  prohibit  the  borrower  from
encumbering the mortgaged  property with additional secured debt or will require
the  consent  of the  trustee  before so  encumbering  the  property.  See "Risk
Factors--Subordinate  financing on the mortgaged property may increase risks" in
this prospectus  supplement and "Certain Legal Aspects of the Mortgage Loans and
Contracts--Subordinate Financing" in the prospectus.

      The following table indicates those mortgaged properties that are known to
the  depositor  to be  encumbered  by  secured  subordinate  debt,  the  initial
principal amount of the secured  subordinate debt and the cut-off date principal
balances of the related mortgage loans.

                            Secured Subordinate Debt

                                      S-34
<PAGE>

                                                            PRINCIPAL
                                                  % OF      AMOUNT OF
           LOAN                         CUT-OFF   INITIAL    SECURED
 CONTROL  LOAN                           DATE      POOL     SUBORDINATE
  NUMBER  NUMBER     PROPERTY NAME      BALANCE   BALANCE      DEBT





[Unsecured Subordinate and Mezzanine Financing

      Some of the  mortgage  loans may permit the  borrower  to incur  unsecured
subordinated debt in the future,  in most cases,  conditioned upon delivery of a
subordination  agreement or standstill  agreement or both and requirements  that
limit  the use of  proceeds  to  refurbishing  or  renovating  the  property  or
acquiring furniture, fixtures and equipment for the property or both. [ ] of the
mortgage  loans  having  a  cut-off  date  balance  of  $[ ],  and  representing
approximately  [ ]% of the initial pool  balance,  permits the borrower to incur
unsecured subordinated debt and/or mezzanine debt secured by equity interests in
the borrower if the sum of all mezzanine, subordinated and other debt secured by
the mortgaged  property does not exceed 80% of the lesser of the (a) fair market
value of the property  determined by the lender and (b) the most recent purchase
price of the property.  Some of the mortgage  loans also permit the owner of the
borrower to incur  "mezzanine  debt"  secured by the  ownership  interest in the
borrower. This financing effectively reduces the indirect equity interest of any
such  owner in the  related  mortgaged  property.  No such  "mezzanine  debt" is
included in the mortgage pool. At the time such mezzanine or  subordinated  debt
is incurred,  the DSCR for that mortgage loan may not be less than 1.20x and the
total DSCR (on a pro forma basis) must not be less than 1.10x.  Subject to these
tests, there is no cap on the amount of unsecured subordinated debt or mezzanine
debt that may be incurred.

      Additional debt, in any form, may cause a diversion of funds from property
maintenance  and  increase  the  likelihood  that the  borrower  will become the
subject of a bankruptcy proceeding.

      Except as  described  above,  the  depositor  has not been able to confirm
whether the  respective  borrowers  under the mortgage loans have any other debt
outstanding.

      See "Risk  Factors--Subordinate  financing on the  mortgaged  property may
increase  risk" and  "--Mezzanine  debt  secured by equity in the  borrower  may
increase risk" in this  prospectus  supplement and "Certain Legal Aspects of the
Mortgage Loans and Contracts--Subordinate Financing" in the prospectus.]

[Ground Leases

      [ ] mortgaged  properties securing mortgage loans, which represent [ ]% of
the initial pool  balance,  are subject  solely to the lien of a mortgage on the
applicable borrower's leasehold interest in such mortgaged property.

                                      S-35
<PAGE>

      [ ] mortgaged  properties securing mortgage loans, which represent [ ]% of
the initial pool balance, are subject to the lien of either:

          o    a mortgage  on both the  borrower's  leasehold  interest  and the
               ground lessor's fee simple interest in the mortgaged property or

          o    a mortgage on both the borrower's leasehold interest in a portion
               of the mortgaged  property and the borrower's fee simple interest
               in the remaining portion of the mortgaged property.

      [ ] of the ground leases  (including  any extension  options)  expire less
than ten years after the stated maturity of the related mortgage loan. Under the
terms of each such ground lease, the ground lessor generally has either made its
fee interest subject to the related mortgage or,  typically,  has agreed to give
the holder of the mortgage loan notice of, and has granted such holder the right
to cure, any default or breach by the lessee.]

[Significant Mortgage Loans

[The [  ] Loan

      The Loan. The "[ ] loan" representing [ ]% of the initial pool balance was
originated  by [ ] on [ ] and has a principal  balance as of the cut-off date of
approximately  $[ ]. The [ ] loan is a balloon loan with a maturity  date of [ ]
and is secured by, among other  things,  a fee mortgage  encumbering a [[ ] unit
multifamily building with retail space] located in [ ]. The [ ] loan was made to
[ ].

      Payment  and  prepayment  terms  for  the [ ] loan  are set  forth  in the
following table:

      [[  ] Loan Payment and Prepayment Table].

      The [  ] Property. [  ].

      Defeasance. [  ].

      Value. [  ].

      Underwritten NCF and DSC Ratio. [ ].

      Property Management. [  ].

      Master Lease. [  ].

      Debt Service Reserve. [  ].

      Lockbox. [  ].]



                                      S-36
<PAGE>

Mortgage Pool Characteristics

      None of the mortgage  loans will have been  originated  prior to , or will
have a maturity  date later than 1, 20 . No mortgage  loan will have a remaining
term to  maturity  as of the  cut-off  date of less than  months.  The  weighted
average  remaining term to maturity of the mortgage loans as of the cut-off date
will be approximately  months. The weighted average original term to maturity of
the mortgage loans as of the cut-off date will be approximately  months.  __% of
the mortgage  loans are fully  amortizing and have original terms to maturity of
approximately  fifteen years,  with a weighted average  remaining term to stated
maturity of these  mortgage  loans of __ months.  __% of the mortgage  loans are
fully  amortizing  and have original terms to maturity of  approximately  thirty
years,  with a  weighted  average  remaining  term to stated  maturity  of these
mortgage loans of __ months.

      [Approximately % of the mortgage loans will be Buy-Down Loans.]

      None of the  mortgage  loans  provide  for  deferred  interest or negative
amortization.

      [Approximately ___% of the mortgage loans are Convertible  Mortgage Loans,
which  provide  that,  at the option of the related  mortgagor,  the  adjustable
interest rate on a mortgage loan may be converted to a fixed interest rate. Upon
conversion,  the  mortgage  rate  will be  converted  to a fixed  interest  rate
determined in accordance with the formula set forth in the related mortgage note
which  formula is intended  to result in a mortgage  rate which is not less than
the then current market interest rates,  subject to applicable usury laws. After
the conversion,  the monthly payments of principal and interest will be adjusted
to provide for full amortization over the remaining term to scheduled maturity.]

      [The  servicer will be obligated to repurchase  any  Convertible  Mortgage
Loan following the conversion  thereof at a price equal to the unpaid  principal
balance thereof plus accrued interest to the first day of the month in which the
purchase price is to be distributed to the Class A Certificates. If the servicer
fails to  repurchase  a  Convertible  Mortgage  Loan  following  the  conversion
thereof,  it will not  constitute  an Event of  Default  under the  Pooling  and
Servicing  Agreement  and the  mortgage  loan will remain in the trust fund as a
fixed-rate loan.]

      Approximately  ___%  of  the  mortgage  loans  will  have  mortgage  rates
calculated on the basis of the simple interest method.  See "The Trust Fund--The
Mortgage Pools--Simple Interest Loans" in the prospectus.

      [Mortgage  Rate  Adjustment:  The mortgage rate on the mortgage loans will
adjust semi-annually commencing  approximately six months after origination,  on
the adjustment  date specified in the related  mortgage note, to a rate equal to
the sum,  rounded as specified in the related mortgage notes, of Six-Month LIBOR
and the note  margin  set forth in the  related  mortgage  note,  subject to the
limitations described in this prospectus supplement.]

      [The amount of the monthly  payment on each mortgage loan will be adjusted
semi-annually  on the due date of the  month  following  the  month in which the
adjustment  date  occurs to equal the amount  necessary  to pay  interest at the
then-applicable  mortgage rate and to fully amortize the  outstanding  principal
balance of each mortgage loan over its remaining term to


                                      S-37
<PAGE>

stated  maturity.  As of the cut-off date,  ___% of the mortgage loans will have
reached  their first  adjustment  date.  The  mortgage  loans will have  various
adjustment dates, note margins and limitations on the mortgage rate adjustments,
as described below.]

      [The  mortgage  rate on each  loan may not  increase  or  decrease  on any
adjustment  date by more than a specified  percentage  per annum.  This periodic
rate cap is not more than ___%,  except  that the  mortgage  rate on some of the
mortgage loans may adjust up to ___% on the initial adjustment date.]

      [The mortgage rate on a mortgage loan may not exceed the maximum  mortgage
rate or be less than the minimum  mortgage rate specified for such mortgage loan
in the related  mortgage note. The minimum  mortgage rate for each mortgage loan
will be equal to the note  margin,  except in the case of ____% of the  mortgage
loans,  which have a minimum  mortgage  rate greater  than the note margin.  The
minimum  mortgage  rates on the  mortgage  loans will range from ____% to ____%,
with a weighted  average minimum mortgage rate as of the cut-off date of _____%.
The  maximum  mortgage  rates on the  mortgage  loans  will  range from ____% to
______%, with a weighted average maximum mortgage rate as of the cut-off date of
____%.  No mortgage loan provides for payment caps on any  adjustment  date that
would result in deferred interest or negative amortization.]

      [Six-Month LIBOR. The reference date with respect to each mortgage loan is
the date as of which  Six-Month  LIBOR, as published by The Wall Street Journal,
is determined. The reference date with respect to each mortgage loan is:

          o    the first  business day of the month  immediately  preceding  the
               month in which the adjustment date occurs,

          o    the date forty-five days prior to the adjustment date,

          o    the date fifteen days prior to the adjustment date, or

          o    the 20th  day of the  month  preceding  the  month  in which  the
               adjustment date occurs;

except that the reference date with respect to ___ mortgage loans,  representing
approximately  ___% of the aggregate  principal  balance of the mortgage  loans,
will adjust with  respect to  Six-Month  LIBOR as published by Fannie Mae and as
most recently  available as of the date  forty-five days prior to the adjustment
date.]

      [Listed  below are  levels of  Six-Month  LIBOR as  published  by The Wall
Street  Journal that are or would have been  applicable to mortgage loans with a
reference date of the first business day of the preceding  month, and having the
following  adjustment dates for the indicated  years.  There can be no assurance
that levels of Six-Month LIBOR published by Fannie Mae, or published in The Wall
Street Journal on a different  reference date would have been at the same levels
as those set forth below. The following does not purport to be representative of
future levels of Six-Month  LIBOR, as published by Fannie Mae or The Wall Street
Journal.  No


                                      S-38
<PAGE>

assurance can be given as to the level of Six-Month LIBOR on any adjustment date
or during the life of any mortgage loan based on Six-Month LIBOR.]

      [table of Six-Month LIBOR]


      The initial  mortgage rate in effect on a mortgage loan  typically will be
lower,  and may be significantly  lower,  than the mortgage rate that would have
been in effect based on Six-Month LIBOR and the related note margin.  Therefore,
unless  Six-Month  LIBOR  declines  after  origination  of a mortgage  loan, the
related  mortgage  rate will  typically  increase on the first  adjustment  date
following  origination of such mortgage loan,  subject to the periodic rate cap.
The  repayment  of the  mortgage  loans will be  dependent on the ability of the
mortgagors to make larger monthly payments following adjustments of the mortgage
rate.  Mortgage  loans that have the same initial  mortgage  rate may not always
bear interest at the same  mortgage  rate because such  mortgage  loans may have
different  adjustment  dates  (and the  mortgage  rates  therefore  may  reflect
different  related Index  values),  note  margins,  maximum  mortgage  rates and
minimum mortgage rates. The net mortgage rate with respect to each mortgage loan
as of the cut-off date will be set forth in the mortgage loan schedule  attached
to the Pooling and Servicing  Agreement.  The net mortgage rate on each mortgage
loan will be adjusted on each  adjustment  date to equal the servicing fee rate,
which the mortgage  rate on the mortgage  loan minus the sum of (i) the rate per
annum at which the  servicing  fee  accrues  on the  mortgage  loan and (ii) the
policy premium rate, which is the amount of the premium payable to the financial
guaranty  insurer  with  respect to the  financial  guaranty  insurance  policy,
subject to any  periodic  rate cap,  but may not exceed the maximum net mortgage
rate, or be less than the minimum net mortgage rate for such mortgage  loan. See
"Description  of the  Mortgage  Pool--Mortgage  Pool  Characteristics"  in  this
prospectus supplement.]

      Set forth below is a description of some additional characteristics of the
mortgage  loans  as  of  the  cut-off  date  unless  otherwise  indicated.   All
percentages  of the  mortgage  loans are  approximate  percentages  by aggregate
principal  balance as of the cut-off  date unless  otherwise  indicated.  Unless
otherwise specified,  all principal balances of the mortgage loans are as of the
cut-off date and are rounded to the nearest dollar.

                                 Mortgage Rates

                                      Cut-off Date
                      Number of        Principal        Percent of
Mortgage Rates (%)  Mortgage Loans      Balance       Mortgage Pool


                                      $                          %





                                      S-39
<PAGE>




  Total                               $                          %

      As of the cut-off date, the weighted average mortgage rate of the mortgage
loans will be approximately % per annum.



                    Original Mortgage Loan Principal Balances

                                      Cut-off Date

Original Mortgage     Number of        Principal      Percentage of
   Loan Balance     Mortgage Loans      Balance       Mortgage Pool


  $                                   $                          %






  Total                               $                          %

      As of the  cut-off  date,  the  average  unpaid  principal  balance of the
mortgage loans will be approximately $ .


                                      S-40
<PAGE>

                     Net Mortgage Rates of the Mortgage Loans

                                 Number of  Cut-off Date  Percent of
Net Mortgage                     Mortgage    Principal     Mortgage
Rates (%)                          Loans      Balance       Loans
  6.000-................6.499               $                       %
  6.500-................6.999
  7.000-................7.499
  7.500-................7.999
  8.000-................8.499
  8.500-................8.999
  9.000-................9.499
  9.500-................9.999
 10.000-...............10.499
 11.000-...............11.499
 11.500-...............11.999
 12.000-...............12.499
 12.500-...............12.999
 13.000-...............13.499
      Total..................               $                       %


      As of the cut-off  date,  the weighted  average net  mortgage  rate of the
mortgage loans will be approximately _______% per annum.

                         [Combined Loan-to-Value Ratios

                                      Cut-off date

  Combined Loan       Number of        Principal      Percentage of
to Value Ratio (%)  Mortgage Loans      Balance       Mortgage Pool

                                      $                          %




  Total                               $                          %

      The weighted average combined LTV ratio at origination of the mortgage
loans will be approximately         %.]
                            --------
-

      [The method for  calculating  the combined  LTV ratio is  described  below
      under the caption "Underwriting Standards."]

                                      S-41
<PAGE>

                      [Junior Ratios of the Mortgage Loans

                                             Cut-off

                                Number of      Date     Percent of
                                Mortgage    Principal    Mortgage

 Junior Ratio(%)                    Loans    Balance       Loans

          -                                  $                %
          -
          -
          -
          -
          -
          -
          -
          -
          -

            Total                            $                %
                                             =====
------------------
           Excludes  mortgage  loans  secured  by  first  liens  on the  related
           mortgaged  property.  With respect to each mortgage loan secured by a
           second lien on the related  mortgaged  property,  the Junior Ratio is
           the ratio of the original  principal  balance of the mortgage loan to
           the sum of (i) the original  principal balance of that mortgage loan,
           and (ii) the unpaid principal  balance of any senior lien at the time
           of the origination of that mortgage loan.

          The  weighted  average  Junior  Ratio  as  of  the  cut-off  date  was
     approximately __%.]


                 Geographic Distributions of Mortgaged Properties

                                      Cut-off Date
                      Number of        Principal      Percentage of
      State         Mortgage Loans      Balance       Mortgage Pool


[California                           $                          %

Connecticut

Illinois

New Jersey

New York]

Other (1)

                                      S-42
<PAGE>

  Total                               $                          %

      (1) Other  includes  states and the  District  of  Columbia  with under 3%
concentrations individually.


      No  more  than % of the  mortgage  loans  will  be  secured  by  mortgaged
properties  located in any one zip code area in California and no more than % of
the mortgage  loans will be secured by mortgaged  properties  located in any one
zip code area outside California.

                              Mortgage Loan Purpose

                                      Cut-off Date
                      Number of        Principal      Percentage of
   Loan Purpose     Mortgage Loans      Balance       Mortgage Pool


Purchase                              $                          %

Rate/Term
Refinance

Equity Refinance

  Total                               $                          %

      The weighted  average  combined LTV ratio at  origination of rate and term
refinance  mortgage loans will be %. The weighted  average combined LTV ratio at
origination of equity refinance mortgage loans will be %.


                        Mortgage Loan Documentation Types

                                      Cut-off Date
                      Number of        Principal      Percentage of
Documentation Type  Mortgage Loans      Balance       Mortgage Pool


Full                                  $                          %

Reduced

  Total                               $                          %

          o    For  purposes  of the above  table,  Reduced  Documentation  Type
               includes mortgage loans which were underwritten under a no stated
               income                                                   program.

      [The weighted average LTV ratio at origination of the mortgage loans which
were underwritten under a reduced loan documentation  program will be %. No more
than % of the  reduced  loan  documentation  mortgage  loans  will be secured by
mortgaged properties located in California.]

                                      S-43
<PAGE>

                                 Occupancy Types

                                      Cut-off Date
                      Number of        Principal      Percentage of
    Occupancy       Mortgage Loans      Balance       Mortgage Pool


Primary Residence                     $                          %

Second/Vacation

Non Owner-occupied

  Total                               $                          %

                            Mortgaged Property Types


                                      Cut-off Date
                      Number of        Principal      Percentage of
  Property Type     Mortgage Loans      Balance       Mortgage Pool


Single-family                         $                          %
detached

Planned Unit
Developments
(detached)

Two- to
four-family units

Condo Low-Rise
(less than 5
stories)

Condo Mid-Rise (5
to 8 stories)

Condo High-Rise
(9 stories or
more)

Townhouse

Planned Unit
Developments
(attached)

Cooperative Units

Multifamily

Leasehold

                                      S-44
<PAGE>

  Total                                    $                     %

                      [Lien Priority of the Mortgage Loans

                              Number of      Cut-off Date    Percent of
      Lien Property         Mortgage Loans     Principal      Mortgage
                                                Balance        Loans


First Lien                                     $                  %
                                               --              ---
Second Lien                                    $                  %
                                               --              ---
     Total                                     $                  %]
                                               ==              ===
-

           Remaining Term of Scheduled Maturity of the Mortgage Loans

                                 Number of  Cut-off Date Percent of

 Months Remaining to Scheduled   Mortgage    Principal   Mortgage
            Maturity               Loans      Balance      Loans

                                                    $
                                                         %
                                                         %

                                                         %

                                                         %

                                                         %

                                                         %

                                                         %

                                                         %

     Total       $             %                         %

      The weighted  average  remaining term to maturity of the mortgage loans as
of the cut-off date was approximately ___ months.

      [In  connection  with each  mortgage  loan that is secured by a  leasehold
interest, the related seller shall have represented to the depositor that, among
other things:

          o    the use of leasehold  estates for  residential  properties  is an
               accepted  practice  in  the  area  where  the  related  mortgaged
               property is located;

          o    residential  property in the area consisting of leasehold estates
               is readily marketable;

          o    the lease is recorded and no party is in any way in breach of any
               provision of the lease;

                                      S-45
<PAGE>

          o    the  leasehold  is in full force and effect and is not subject to
               any prior lien or  encumbrance  by which the  leasehold  could be
               terminated or subject to any charge or penalty; and

          o    the remaining  term of the lease does not terminate less than ten
               years after the maturity date of each such mortgage loan.

Underwriting Standards

General

      All of the mortgage  loans  included in the mortgage pool will be acquired
by the depositor  from the seller.  The following is a brief  description of the
various  underwriting  standards and the  procedures  applicable to the mortgage
loans.

      All [one- to  four-family  residential][commercial][multifamily]  mortgage
loans must meet  acceptable  credit,  appraisal  and  underwriting  criteria  as
established by the seller.  The seller's  underwriting  standards are applied in
accordance with applicable state and federal laws and regulations.  Underwriting
guidelines are established to set acceptable  criteria regarding credit history,
repayment  ability,  adequacy  of  necessary  liquidity,  and  adequacy  of  the
collateral.  These guidelines  typically  conform to secondary market standards,
particularly for conforming loan amounts.

      Additional  loan-to-value  ratio guidelines are established for individual
programs and loan amount ranges.

      [The mortgage loans have been originated  under  documentation  guidelines
classified as "Full Doc", "Low Doc Reduced Doc" and "Streamline  Refinance Doc."
The Full Doc program  consists  of two years of tax  returns  for  self-employed
applicants,  paystubs and W-2's for salaried  applicants and bank statements for
verification of liquidity.  The Low Doc program utilizes income as stated by the
borrower in the loan application and, for certain  loan-to-value ratios and loan
amounts, assets as stated by the borrower. In Low Doc transactions,  independent
confirmation  of the  borrower's  source  of  income is  obtained.  The  Reduced
Documentation  program utilizes borrower paystubs and W-2 forms and a Streamline
Refinance   Documentation   program  utilizes  borrower  paystubs  and  original
appraised value with a current drive-by inspection.]

      The seller's  underwriting  of the mortgage loans consisted of an analysis
of the following applicant information:

          o    an applicant's income,  employment,  assets,  debts, payments and
               specific questions regarding credit history,

          o    an evaluation and confirmation of an applicant's credit history,

          o    the adequacy and stability of an applicant's income,  including a
               review  of the  documentation,  verification  of  employment  and
               income,  an analysis of tax returns and  statements of assets and
               liabilities.

                                      S-46
<PAGE>

          o    calculations are made to establish the relationship between fixed
               expenses  and gross  monthly  income,  which are reviewed for the
               applicant's  overall ability to repay the mortgage loan including
               other income sources,  commitment to the property as evidenced by
               loan to value,  other  liquid  resources,  ability to  accumulate
               assets and other compensating factors, and

          o    the adequacy of the mortgaged property to serve as collateral for
               a mortgage loan, including a physical inspection of the property,
               an  evaluation  of the  property's  value  for  recent  sales  of
               comparable   properties  and  its   conformity  to   neighborhood
               standards.

      [All  mortgage  loans are subject to a sampling by the  seller's  internal
Quality  Assurance  Department,  which  reviews  and  reverifies  a  statistical
sampling of loans on a regular basis. All loans with  loan-to-value  ratios over
80% have either private mortgage  insurance coverage in an amount meeting Fannie
Mae and Freddie Mac  requirements  or a higher  interest rate in lieu of private
mortgage  insurance.]  Adequate title insurance and hazard insurance is required
for all loans. From time to time, loan-to-value ratio exceptions may be made for
credit  worthy  applicants  who  exhibit  strong  compensating  factors and well
supported collateral valuations.

      [Environmental Assessments

      "Phase  I"  environmental   site  assessments  or  updates  of  previously
conducted assessments were performed on all but [ ] of the mortgaged properties,
which constitute [ ]% of the initial pool balance. "Phase II" environmental site
assessments  were performed on some mortgaged  properties.  These  environmental
site  assessments  were  performed for the seller or the report was delivered to
the seller as part of its  acquisition  or origination of the mortgage loan. For
all but [ ] of the mortgaged properties which represent [ ]% of the initial pool
balance,  these  environmental  assessments  were performed  during the 12-month
period before the cut-off date.

      Material adverse  environmental  conditions or  circumstances  revealed by
these  environmental  assessments for the mortgaged  properties are described in
"Risk  Factors--Adverse  environmental  conditions on the mortgaged property may
reduce or delay your payments."

      The information  contained in this  prospectus  supplement is based on the
environmental  assessments  and  has  not  been  independently  verified  by the
depositor, the seller, the servicer, the underwriters or any of their respective
affiliates.]

      [Property Condition Assessments

      Inspections or updates of previously conducted inspections of all except [
] of  the  mortgaged  properties,  which  constitute  [ ]% of the  initial  pool
balance,  were conducted in connection  with the  origination or the purchase of
the related  mortgage loan by  independent  licensed  engineers or architects or
both. For all but [ ] of the mortgaged  properties,  which secure mortgage loans
representing [ ]% of the initial pool balance,  the  inspections  were conducted
within the  12-month  period  before the cut-off  date for the related  mortgage
loan. The  inspections  were conducted to inspect the exterior  walls,  roofing,
interior  construction,  mechanical and

                                      S-47
<PAGE>

electrical  systems  and  general  condition  of the site,  buildings  and other
improvements  located at a mortgaged property.  The resulting reports on some of
the mortgaged  properties  indicated a variety of deferred maintenance items and
recommended capital expenditures. In some instances, repairs or maintenance were
completed  before closing or cash reserves were established to fund the deferred
maintenance or replacement items or both.]

      [Appraisals

      An appraisal  for each  mortgaged  property  was  performed or an existing
appraisal  updated in  connection  with the  origination  or the purchase of the
related mortgage loan. For all but [ ] of the mortgaged properties, which secure
mortgage  loans  representing  [ ]% of the initial pool balance,  the appraisals
were performed during the 12-month period before the cut-off date. The appraised
value of the  mortgaged  property or  properties  is greater  than the  original
principal  balance of the  mortgage  loan or the  aggregate  original  principal
balance of any set of cross-collateralized  loans. All appraisals were conducted
by an independent appraiser that is state certified or designated as a member of
the Appraisal  Institute.  The  appraisal for all but [ ] mortgaged  properties,
which constitute [ ]% of the initial pool balance, or a separate letter contains
a statement by the  appraiser  to the effect that the  appraisal  guidelines  of
Title XI of the Financial  Institutions Reform,  Recovery and Enforcement Act of
1989, were followed in preparing the appraisal.  However, none of the depositor,
the underwriters,  or the seller has independently  verified the accuracy of the
appraiser's statement. For a discussion of the risks related to appraisals,  see
"Risk  Factors--Losses  may result if the servicer is unable to sell a mortgaged
property  securing a defaulted  mortgage loan for its  appraised  value" in this
prospectus supplement.

      For information about the values of the mortgaged  properties available to
the depositor as of the cut-off date.]

[Hazard, Liability and Other Insurance

      The  mortgage  loans  typically  require  that the  mortgaged  property be
insured by a hazard  insurance  policy  with a  customary  deductible  and in an
amount at least equal to the lesser of the outstanding  principal balance of the
mortgage  loan  and  100%  of  the  full  insurable   replacement  cost  of  the
improvements  located  on the  mortgaged  property.  If  applicable,  the policy
contains  appropriate  endorsements to avoid the application of co-insurance and
does not permit reduction in insurance proceeds for depreciation.

      Flood  insurance,  if  available,  must be in  effect  for  any  mortgaged
property  that at the time of  origination  included any area  identified in the
Federal Register by the Federal  Emergency  Management  Agency as having special
flood hazards. The flood insurance policy must meet the requirements of the then
current  guidelines of the Federal  Insurance  Administration,  be provided by a
generally acceptable insurance carrier and be in an amount representing coverage
not less than the least of:

          o    the outstanding principal balance of the mortgage loan,

          o    the full insurable value of the mortgaged property,

                                      S-48
<PAGE>

          o    the maximum  amount of  insurance  available  under the  National
               Flood Insurance Act of 1968, and

          o    100% of the replacement cost of the  improvements  located on the
               mortgaged property, except in some cases where self-insurance was
               permitted.

      The standard form of hazard  insurance  policy  typically  covers physical
damage or destruction of the  improvements  on the mortgaged  property caused by
fire, lightning,  explosion, smoke, windstorm and hail, riot or strike and civil
commotion. The policies may contain some conditions and exclusions to coverage.

      Each   mortgage   typically   also   requires  the  borrower  to  maintain
comprehensive general liability insurance against claims for personal and bodily
injury,  death or  property  damage  occurring  on,  in or about  the  mortgaged
property in an amount customarily required by institutional lenders.

      Each mortgage  typically further requires the related borrower to maintain
business  interruption or rent loss insurance in an amount not less than 100% of
the  projected  rental income from the related  mortgaged  property for not less
than twelve months.

      The mortgaged  properties are typically not insured for  earthquake  risk.
For mortgaged properties located in California and some other seismic zones, the
seller typically conducted seismic studies to assess the "probable maximum loss"
for the  related  mortgaged  properties.  In  some  circumstances,  the  related
borrower  was required to obtain  earthquake  insurance  covering the  mortgaged
properties.  Some of these  mortgaged  properties  may be insured for earthquake
risk in amounts  less than the  outstanding  principal  balances of the mortgage
loan.]

      [Earnouts and Additional Collateral Loans

      Some of the mortgage  loans are  additionally  secured by cash reserves or
irrevocable  letters of credit that will be released  upon  satisfaction  by the
borrower  of  leasing-related  or other  conditions,  including,  in some cases,
achieving  specified debt service  coverage ratios or loan-to-value  ratios.  If
these  conditions are not met, under some mortgage loans, the related reserve or
credit  enhancement  amount will be applied to  partially  defease or prepay the
related mortgage loan. Any resulting  partial  prepayment may not be required to
be accompanied by payment of a prepayment premium or yield maintenance  payment.
Under [ ] mortgage loans, amounts will be retained as additional collateral.]

                             THE SELLER AND SERVICER

General

General

[____________________], is the seller and servicer for all the mortgage loans in
the mortgage pool.

                 [ADDITIONAL SERVICER INFORMATION TO BE INCLUDED]
                  ----------------------------------------------

                                      S-49
<PAGE>

                         DESCRIPTION OF THE CERTIFICATES

General

      The  Mortgage-Backed  Pass-Through  Certificates,   Series  200_-___  will
include the  following  [three]  classes of Class A  Certificates:

     o    [Class A-1 Certificates, or the Adjustable Rate Certificates

     o    Class A-2 Certificates; and

     o    Class A-3 Certificates, or the Lockout Certificates; and together with
          the Class A-2 Certificates, the Fixed Rate Certificates]

      In addition to the Class A Certificates,  the Mortgage-Backed Pass-Through
Certificates,  Series  200_-___ will also include [two] classes of  certificates
which are designated as the Class SB Certificates and Class R Certificates. Only
the  Class A  Certificates  are  offered  by  this  prospectus  supplement.  See
"Glossary" in the prospectus for the meanings of capitalized  terms and acronyms
not otherwise defined in this prospectus supplement.

      The certificates will evidence the entire beneficial ownership interest in
the trust fund. The trust fund will consist of:


          o    the mortgage loans

          o    the assets as from time to time that are  identified as deposited
               in respect of the mortgage loans in the Custodial  Account and in
               the Payment  Account and  belonging  to the trust fund

          o    property acquired by foreclosure of the mortgage loans or deed in
               lieu of foreclosure

          o    any  applicable  primary  insurance  policies and primary  hazard
               insurance policies

          o    the financial guaranty insurance policy; and

          o    all proceeds of any of the foregoing.

      The Class A Certificates will be available only in book-entry form through
facilities of The  Depository  Trust Company.  The Class A Certificates  will be
issued,  maintained and  transferred  on the  book-entry  records of DTC and its
participants.  The Class A Certificates will be issued in minimum  denominations
of $25,000 and integral multiples of $1 in excess thereof.



                                      S-50
<PAGE>

      The Class A Certificates  will be represented by one or more  certificates
registered in the name of the nominee of DTC. The depositor has been informed by
DTC that DTC's nominee will be Cede & Co. No  beneficial  owner will be entitled
to receive a  certificate  of any class in fully  registered  form, a definitive
certificate,   except  as  described  in  this   prospectus   supplement   under
"--Book-Entry  Registration  of Certain of the Offered  Certificates--Definitive
Certificates." Unless and until definitive certificates are issued for the Class
A  Certificates  under the limited  circumstances  described in this  prospectus
supplement:

          o    all references to actions by  certificateholders  with respect to
               the Class A Certificates shall refer to actions taken by DTC upon
               instructions from its participants, and

          o    all references in this  prospectus  supplement to  distributions,
               notices,   reports  and  statements  to  certificateholders  with
               respect to the Class A Certificates shall refer to distributions,
               notices, reports and statements to DTC or Cede, as the registered
               holder  of  the  Class  A  Certificates,   for   distribution  to
               beneficial owners by DTC in accordance with DTC procedures.

      According to DTC, the foregoing  information  with respect to DTC has been
provided  for  informational  purposes  only and is not  intended  to serve as a
representation, warranty or contract modification of any kind.

Book-Entry Registration of Certain of the Offered Certificates

      General.   Beneficial   owners  that  are  not  participants  or  indirect
participants but desire to purchase, sell or otherwise transfer ownership of, or
other interests in, the Class A Certificates may do so only through participants
and  indirect  participants.  In  addition,  beneficial  owners will receive all
distributions of principal of and interest on the Class A Certificates  from the
paying agent through DTC and  participants.  Accordingly,  beneficial owners may
experience  delays in their  receipt of  payments.  Unless and until  definitive
certificates are issued for the Class A Certificates, it is anticipated that the
only registered  certificateholder  of the Class A Certificates will be Cede, as
nominee of DTC.  Beneficial  owners will not be recognized by the trustee or the
servicer as certificateholders, as the term is used in the pooling and servicing
agreement,  and  beneficial  owners  will be  permitted  to receive  information
furnished to certificateholders and to exercise the rights of certificateholders
only indirectly through DTC, its participants and indirect participants.

      Under the rules, regulations and procedures creating and affecting DTC and
its  operations,  DTC is required to make  book-entry  transfers  of the Class A
Certificates  among  participants  and to receive and transmit  distributions of
principal  of, and  interest  on,  the Class A  Certificates.  Participants  and
indirect participants with which beneficial owners have accounts with respect to
the Class A Certificates similarly are required to make book-entry transfers and
receive and  transmit  distributions  on behalf of their  respective  beneficial
owners.  Accordingly,  although  beneficial  owners  will not  possess  physical
certificates evidencing their interests in the Class A Certificates, DTC's rules
provide a mechanism by which beneficial  owners,  through their participants and
indirect  participants,  will receive distributions and will be able to transfer
their interests in the Class A Certificates.

                                      S-51
<PAGE>

      None of the depositor, the servicer or the trustee will have any liability
for any actions  taken by DTC or its  nominee,  including,  without  limitation,
actions for any aspect of the records relating to or payments made on account of
beneficial  ownership  interests in the Class A  Certificates  held by Cede,  as
nominee  for DTC,  or for  maintaining,  supervising  or  reviewing  any records
relating to such beneficial ownership interests.

      Definitive  Certificates.   Definitive  certificates  will  be  issued  to
beneficial  owners or their  nominees,  respectively,  rather than to DTC or its
nominee,  only under the limited  conditions  described in the prospectus  under
"Description of the Certificates--Form of Certificates."

      Upon the  occurrence of an event  described in the prospectus in the third
paragraph under  "Description of the  Certificates--Form  of Certificates,"  the
trustee is required to notify,  through DTC,  participants who have ownership of
Class A Certificates  as indicated on the records of DTC of the  availability of
definitive certificates for their Class A Certificates. Upon surrender by DTC of
the  definitive  certificates  representing  the Class A  Certificates  and upon
receipt of instructions from DTC for  re-registration,  the trustee will reissue
the Class A  Certificates  as definitive  certificates  issued in the respective
principal  amounts owned by individual  beneficial  owners,  and  thereafter the
trustee  and  the  servicer  will   recognize  the  holders  of  the  definitive
certificates as certificateholders under the pooling and servicing agreement.

      For   additional   information   regarding  DTC  and  the  DTC  registered
certificates, see "Description of the Certificates--Form of Certificates" in the
prospectus.

Glossary of Terms

      The  following  terms are given the meanings  shown below to help describe
the cash flows on the certificates:

      Accrued  Certificate  Interest  - For any  distribution  date and class of
Class A  Certificates,  an amount equal to interest  accrued  during the related
Interest Accrual Period on the Certificate Principal Balance of the certificates
of that  class  immediately  prior  to  that  distribution  date at the  related
pass-through rate less interest  shortfalls,  if any, allocated thereto for that
distribution  date,  to the  extent  not  covered  with  respect  to the Class A
Certificates  by  the  subordination  provided  by  the  Class  SB  Certificates
including:

           (i) any  Prepayment  Interest  Shortfall to the extent not covered by
      the servicer as described in this prospectus supplement under "Description
      of the Certificates--Interest Distributions";

           (ii) the interest portions of Realized Losses, including Excess
      Special Hazard Losses, Excess Fraud Losses, Excess Bankruptcy Losses, and
      Extraordinary Losses not allocated through subordination;

           (iii)the interest portion of any Advances that were made with respect
      to  delinquencies  that were  ultimately  determined to be Excess  Special
      Hazard  Losses,   Excess  Fraud  Losses,   Excess   Bankruptcy  Losses  or
      Extraordinary Losses; and

                                      S-52
<PAGE>

           (iv) any other  interest  shortfalls  not  covered by  subordination,
      including interest shortfalls relating to the Soldiers' and Sailors' Civil
      Relief Act of 1940, or Relief Act, or similar  legislation or regulations,
      all allocated as described below.

Any  reductions   will  be  allocated  among  the  holders  of  all  classes  of
certificates  in proportion  to the  respective  amounts of Accrued  Certificate
Interest  that would have been  payable on that  distribution  date absent these
reductions.  In the  event  that  any  shortfall  described  in the  immediately
preceding  four clauses above is allocated to the offered  certificates,  or the
Available Distribution Amount on any distribution date is less than the Interest
Distribution  Amount due on any  distribution  date, the amount of any shortfall
will be drawn under the financial  guaranty  insurance policy and distributed to
the  holders of the Class A  Certificates.  Notwithstanding  the  foregoing,  if
payments are not made as required under the financial guaranty insurance policy,
any  interest  shortfalls  may be  allocated  to the  Class  A  Certificates  as
described above.  See "--Financial  Guaranty  Insurance  Policy" below.  Accrued
Certificate  Interest on each class of Class A Certificates  will be distributed
on a pro rata basis. Accrued Certificate Interest on the Class A-2 and Class A-3
Certificates  is calculated on the basis of a 360-day year  consisting of twelve
30-day months.  Accrued Certificate  Interest on the Class A-1 Certificates will
be calculated on the basis of the actual number of days in the Interest  Accrual
Period and a 360-day year.

      Available Distribution Amount - For any distribution date, an amount equal
      to:

          o    the aggregate amount of scheduled  payments on the mortgage loans
               due on the  related  due  date  and  received  on or prior to the
               related  determination  date,  after  deduction  of  the  related
               servicing fees and any subservicing  fees, which are collectively
               referred to as the servicing fees, and the premium payable on the
               financial guaranty insurance policy;

          o    all unscheduled payments,  including mortgagor prepayments on the
               mortgage  loans,  Insurance  Proceeds,  Liquidation  Proceeds and
               proceeds from repurchases of and  substitutions  for the mortgage
               loans occurring during the preceding calendar month; and

          o    all Advances made for that distribution date, in each case net of
               amounts   reimbursable   therefrom   to  the   servicer  and  any
               subservicer.

      In  addition  to  the  foregoing  amounts,  with  respect  to  unscheduled
collections,  not  including  mortgagor  prepayments,  the servicer may elect to
treat such  amounts as included  in the  Available  Distribution  Amount for the
distribution  date in the month of receipt,  but is not  obligated  to do so. As
described in this prospectus supplement under "--Principal  Distributions on the
Class A Certificates," any amount with respect to which such election is so made
shall be  treated  as  having  been  received  on the last day of the  preceding
calendar  month for the  purposes of  calculating  the amount of  principal  and
interest  distributions  to any  class  of  certificates.  With  respect  to any
distribution  date,  the due date is the first  day of the  month in which  that
distribution date occurs and the determination date is the 20th day of the month
in which that  distribution  date occurs or, if that day is not a business  day,
the immediately succeeding business day.

                                      S-53
<PAGE>

      On any distribution  date, the policy premium rate is equal to one-twelfth
of the  product of the  percentage  specified  in the  Insurance  and  Indemnity
Agreement,  dated as of ______,  ____ among the financial guaranty insurer,  the
depositor,  the  trustee,  the  seller  and  the  servicer,  and  the  aggregate
Certificate  Principal Balance of the Class A Certificates  immediately prior to
such distribution date.

      Certificate Principal Balance - For any Class A Certificate as of any date
of determination,  an amount equal to the initial Certificate  Principal Balance
of that  certificate,  reduced by the aggregate of (a) all amounts  allocable to
principal  previously  distributed with respect to that  certificate,  including
amounts paid pursuant to the financial  guaranty  insurance policy,  and (b) any
reductions in the Certificate  Principal  Balance of that certificate  deemed to
have occurred in connection  with  allocations of Realized  Losses in the manner
described in this prospectus  supplement,  other than any amounts that have been
paid pursuant to the financial guaranty insurance policy.

      Cumulative  Insurance  Payments - The  aggregate of any payments made with
respect to the Class A Certificates by the financial  guaranty insurer under the
financial guaranty insurance policy.

      Excess Bankruptcy Losses - Bankruptcy Losses in excess of the Bankruptcy
Amount.

      Excess Cash Flow-On any  distribution  date,  the excess of the  Available
Distribution Amount over the sum of (a) the Interest Distribution Amount and (b)
the sum of the amounts  described in clauses [ ] of the  definition of Principal
Distribution Amount.

      Excess Fraud Losses - Fraud Losses in excess of the Fraud Loss Amount.

      Excess  Special  Hazard  Losses - Special  Hazard  Losses in excess of the
Special Hazard Amount.

      Excess Subordinated Amount - On any distribution date, the excess, if any,
of (a) the Subordinated  Amount on such  distribution date over (b) the Targeted
Subordinated Amount.

      Final  Disposition - A Final Disposition is deemed to have occurred upon a
determination  by the  servicer  that it has received  all  Insurance  Proceeds,
Liquidation  Proceeds and other payments or cash  recoveries  which the servicer
reasonably and in good faith expects to be finally recoverable with respect to a
defaulted mortgage loan.

      Interest  Accrual  Period - For the Class A-2 and Class A-3  Certificates,
the calendar month  preceding the month in which the  distribution  date occurs.
For the Class A-1  Certificates,  (a) for the  distribution  date in __________,
___, the period  commencing  on the closing date and ending on the day preceding
the distribution  date in ________ ___, and (b) with respect to any distribution
date after the distribution  date in _________ ___, the period commencing on the
distribution  date in the  month  immediately  preceding  the month in which the
distribution date occurs and ending on the day preceding the distribution date.

      Interest Distribution Amount - The aggregate amount of Accrued Certificate
Interest to be distributed  to the holders of the Class A Certificates  for that
distribution date.

                                      S-54
<PAGE>

      Lockout Prepayment  Percentage - For any distribution date occurring prior
to the distribution  date in , 0%. For any distribution date occurring after the
first five years following the closing date, a percentage determined as follows:

          o    for any  distribution  date  during  the  [sixth]  year after the
               closing date, [30]%;

          o    for any  distribution  date during the  [seventh]  year after the
               closing date, [40]%;

          o    for any  distribution  date  during the  [eighth]  year after the
               closing date, [60]%;

          o    for any  distribution  date  during  the  [ninth]  year after the
               closing date, [80]%; and

          o    for any distribution date thereafter, [100]%.

      Lockout  Scheduled  Percentage - For any distribution date occurring prior
to the distribution date in , 0% and for any distribution date thereafter, 100%.

      Principal Distribution Amount -On any distribution date, the lesser of (a)
the balance of the Available  Distribution  Amount  remaining after the Interest
Distribution Amount has been distributed and (b) the sum of:

           (1) the principal  portion of all scheduled  monthly  payments on the
      mortgage  loans  received  or  advanced  with  respect to the  related due
      period;

           (2) the  principal  portion  of all  proceeds  of the  repurchase  of
      mortgage loans or, in the case of a substitution,  amounts  representing a
      principal  adjustment as required by the pooling and  servicing  agreement
      during the preceding calendar month;

           (3)  the  principal  portion  of all  other  unscheduled  collections
      received on the mortgage  loans  during the  preceding  calendar  month or
      deemed to be  received  during the  preceding  calendar  month  including,
      without  limitation,  full and partial  prepayments made by the respective
      mortgagors, to the extent not distributed in the preceding month;

           (4) the  principal  portion of any  Realized  Losses  incurred on the
      mortgage loans for the preceding calendar month to the extent payable from
      Excess Cash Flow on such distribution date; and

           (5)  the Subordination Increase Amount for such distribution date.

      Subordinated Amount - On any distribution date, the excess, if any, of (a)
the  aggregate  Stated  Principal  Balances of the  mortgage  loans after giving
effect to distributions of principal to be made on such  distribution  date over
(b) the  Certificate  Principal  Balance of the Class A Certificates  as of such
date,  after taking into account the payment to the Class A Certificates  of the
amounts  described in clauses [ ] of the  definition  of Principal  Distribution
Amount on such distribution date.

      Subordination  Increase Amount - On any  distribution  date, any amount of
Excess Cash Flow actually applied as an accelerated  payment of principal on the
Class A Certificates.

                                      S-55
<PAGE>

      Subordination  Reduction Amount - On any distribution  date, the lesser of
(a) the Excess Subordinated Amount and (b) the amount available for distribution
specified in clauses [ ] of the definition of Principal Distribution Amount.

      Targeted  Subordinated  Amount - On any  distribution  date,  the required
level of the  Subordinated  Amount,  as set forth in the Pooling  and  Servicing
Agreement.

Distributions

      Distributions  on the Class A Certificates  will be made by the trustee on
the [ ] day of each month or, if that day is not a business  day,  then the next
succeeding  business  day,  commencing  in _______,  [ ].  Distributions  on the
certificates  will be made to the  persons in whose names the  certificates  are
registered at the close of business on the day prior to each  distribution  date
or, if the certificates are no longer DTC registered certificates, on the record
date. See  "Description of the  Certificates--Distributions  on Certificates" in
the prospectus.  Distributions  will be made by check or money order mailed,  or
upon the  request of a  certificateholder  owning  Class A  Certificates  having
denominations,  aggregating at least $1,000,000,  by wire transfer or otherwise,
to the address of the person entitled to the distribution, which, in the case of
DTC registered  certificates,  will be DTC or its nominee,  as it appears on the
trustee's  register  in  amounts  calculated  as  described  in this  prospectus
supplement on the determination date. However,  the final distribution  relating
to the certificates will be made only upon presentation and surrender thereof at
the  office  or  the  agency  of  the  trustee   specified   in  the  notice  to
certificateholders  of the final  distribution.  A business day is any day other
than:

          o    a Saturday or Sunday or

          o    a day on which banking  institutions  in the State of New York, [
               ], [ ] or [ ] are required or authorized by law to be closed.

[Distributions of Prepayment Premiums

      Any prepayment  premium  actually  collected on a mortgage loan during any
collection  period will be distributed on the related  distribution  date to the
holders of the [Class A-1, Class A-2, A-3]  Certificates as additional  interest
and not in  reduction of their  certificate  balances in an amount up to, in the
case of each class, the product of

the prepayment    x     discount rate      x         principal
   premium               fraction for           allocation fraction
                          that class               of that class

      The discount rate fraction for any class of certificates is a fraction not
greater than 1.0 or less than 0.0 and equal to:

           pass-through rate for
           that class of certificates - relevant  discount rate
           ___________________________________________________________________
           mortgage rate of the related mortgage loan -relevant discount rate

      The principal  allocation  fraction for each class of certificates for any
distribution date is:

                                      S-56
<PAGE>

           the portion,  if any, of the principal  distribution amount allocated
           to that  class of  certificates  for that  distribution  date
           ____________________________________________________________________
           entire Principal Distribution Amount for that distribution date

      The portion of the prepayment  premium  remaining after the payment of the
amount  calculated as described  above will be distributed to the holders of the
Class [ ] Certificates.

      For any prepaid mortgage loan, the discount rate means the yield for "This
Week" as reported by the Federal  Reserve Board in Federal  Reserve  Statistical
Release   H.15(519)  for  the  constant  maturity  treasury  having  a  maturity
coterminous  with  the  maturity  date  or  anticipated  repayment  date of that
mortgage  loan as of the  determination  date.  If there is no discount rate for
instruments having a maturity coterminous with the remaining term to maturity or
anticipated  repayment date,  where  applicable,  of the mortgage loan, then the
discount  rate will be equal to the  linear  interpolation  of the yields of the
constant  maturity  treasuries  with maturities next longer and shorter than the
remaining  term to  maturity  or  anticipated  repayment  date.  For some of the
mortgage loans, the discount rate is a semiannual rate.

      The prepayment  premiums,  if any,  collected on the mortgage loans during
any   collection   period   may   not  be   sufficient   to   fully   compensate
certificateholders  of any  class  for any  loss in  yield  attributable  to the
related prepayments of principal.]

Interest Distributions

      Holders of each class of Class A Certificates  will be entitled to receive
interest distributions in an amount equal to the Accrued Certificate Interest on
that  class  on  each  distribution   date,  to  the  extent  of  the  Available
Distribution  Amount  for  that  distribution  date,  commencing  on  the  first
distribution date in the case of all classes of Class A Certificates entitled to
interest distributions.

      Prepayment Interest Shortfalls will result because interest on prepayments
in full is distributed  only to the date of prepayment,  and because no interest
is distributed on prepayments in part, as these  prepayments in part are applied
to reduce the outstanding  principal balance of the related mortgage loans as of
the due date in the month of prepayment.

      However,  on any  distribution  date, any Prepayment  Interest  Shortfalls
resulting from  prepayments in full during the preceding  calendar month will be
offset  by the  servicer,  but  only to the  extent  those  Prepayment  Interest
Shortfalls  do  not  exceed  the  amount  of  the  servicing  fee  due  on  such
distribution  date.   Prepayment  Interest  Shortfalls  resulting  from  partial
prepayments  will not be offset by the servicer from servicing  compensation  or
otherwise.  No assurance can be given that the servicing  compensation available
to  cover  Prepayment  Interest  Shortfalls  will be  sufficient  therefor.  See
"Pooling and Servicing  Agreement--Servicing  and Other Compensation and Payment
of Expenses" in this prospectus supplement.

      [If on any  distribution  date the Available  Distribution  Amount is less
than  Accrued  Certificate  Interest  on  the  Class  A  Certificates  for  that
distribution  date,  the  shortfall  will be

                                      S-57
<PAGE>

allocated among the holders of all classes of Class A Certificates in proportion
to the respective amounts of Accrued Certificate  Interest for that distribution
date. In addition,  the amount of any such interest  shortfalls that are covered
by  subordination,  specifically,  interest  shortfalls  not  described  in  the
definition of Available Distribution Amount preceding paragraph,  will be unpaid
Accrued  Certificate  Interest  and  will be  distributable  to  holders  of the
certificates   of  those  classes   entitled  to  those  amounts  on  subsequent
distribution dates, in each case to the extent of available funds after interest
distributions as required in this prospectus supplement.

      These  shortfalls  could  occur,  for  example,  if  delinquencies  on the
mortgage loans were  exceptionally  high and were  concentrated  in a particular
month and Advances by the servicer did not cover the  shortfall.  Any amounts so
carried  forward will not bear  interest.  Any interest  shortfalls  will not be
offset  by a  reduction  in  the  servicing  compensation  of  the  servicer  or
otherwise,  except to the limited  extent  described in the preceding  paragraph
with respect to Prepayment  Interest  Shortfalls  resulting from  prepayments in
full.

      The pass-through rates on all classes of Class A Certificates,  other than
the  Class  A-1  Certificates,  are  fixed  and  are  listed  on page S- of this
prospectus supplement.

      The  pass-through  rates on the Class A-1  Certificates  are calculated as
follows:

      The pass-through  rate on the Class A-1  Certificates  with respect to the
initial  Interest  Accrual Period is % per annum, and as to any Interest Accrual
Period thereafter,  will be a per annum rate equal to % plus the arithmetic mean
of the  London  interbank  offered  rate  quotations  for  one-month  Eurodollar
deposits,  determined monthly as described in this prospectus supplement, with a
maximum rate of % per annum and a minimum rate of % per annum.

      The  pass-through  rates on the Class A-1 Certificates for the current and
immediately preceding Interest Accrual Period may be obtained by telephoning the
trustee at __________.]

      [The  pass-through  rates on all classes of the Class A Certificates  will
increase  by  __%  per  annum  for  each   distribution  date  after  the  first
distribution  date on which the  servicer  and the  depositor  are  permitted to
exercise their option to purchase the mortgage loans from the trust as described
under  "Pooling  and  Servicing   Agreement--Termination,"  in  this  prospectus
supplement. Notwithstanding the foregoing, the pass-through rates on the Class A
Certificates  will not  increase as  described  above if proceeds  for  optional
termination are available for payment to the  certificateholders  on or prior to
any distribution date.]

      As  described  in this  prospectus  supplement,  the  Accrued  Certificate
Interest  allocable to each class of  certificates  is based on the  Certificate
Principal Balance of that class.

Determination of LIBOR

      LIBOR for any Interest  Accrual Period after the initial  Interest Accrual
Period will be determined as described in the three succeeding paragraphs.

      On each  distribution  date, LIBOR shall be established by the trustee and
as to any Interest  Accrual Period,  LIBOR will equal the rate for United States
dollar  deposits for one month which


                                      S-58
<PAGE>

appears on the Dow Jones  Telerate  Screen  Page 3750 as of 11:00  A.M.,  London
time,  on the second LIBOR  Business Day prior to the first day of that Interest
Accrual  Period--the LIBOR rate adjustment date. Telerate Screen Page 3750 means
the display designated as page 3750 on the Telerate Service or any other page as
may  replace  page 3750 on that  service for the  purpose of  displaying  London
interbank offered rates of major banks. If the rate does not appear on that page
or any other page as may replace that page on that service, or if the service is
no longer offered, any other service for displaying LIBOR or comparable rates as
may be selected by the trustee after  consultation  with the servicer,  the rate
will be the reference bank rate.

      The  reference  bank rate will be  determined on the basis of the rates at
which  deposits in the U.S.  Dollars are offered by the reference  banks,  which
shall be three  major  banks  that are  engaged  in  transactions  in the London
interbank market,  selected by the trustee after consultation with the servicer.
The reference bank rate will be determined as of 11:00 A.M., London time, on the
day  that  is  one  LIBOR  business  day  prior  to  the  immediately  preceding
distribution  date to prime banks in the London interbank market for a period of
one month in amounts  approximately equal to the aggregate Certificate Principal
Balance of the Class A-1 Certificates then outstanding. The trustee will request
the  principal  London  office  of each of the  reference  banks  to  provide  a
quotation of its rate. If at least two quotations are provided, the rate will be
the arithmetic mean of the quotations. If on that date fewer than two quotations
are provided as  requested,  the rate will be the  arithmetic  mean of the rates
quoted by one or more major  banks in New York  City,  selected  by the  trustee
after  consultation with the servicer,  as of 11:00 A.M., New York City time, on
that date for loans in U.S.  Dollars to leading  European  banks for a period of
one month in amounts  approximately equal to the aggregate Certificate Principal
Balance of the Class A-1 Certificates then outstanding.  If no quotations can be
obtained, the rate will be LIBOR for the prior distribution date, or in the case
of the  first  LIBOR  rate  adjustment  date,  % with  respect  to the Class A-1
Certificates;  provided  however,  if, under the priorities listed previously in
this  paragraph,  LIBOR for a distribution  date would be based on LIBOR for the
previous  distribution  date for the third  consecutive  distribution  date, the
trustee shall select an alternative  comparable index over which the trustee has
no control,  used for  determining  one-month  Eurodollar  lending rates that is
calculated and published or otherwise  made  available by an independent  party.
LIBOR business day means any day other than (i) a Saturday or a Sunday or (ii) a
day on which banking institutions in the city of London, England are required or
authorized by law to be closed.

      The  establishment  of LIBOR by the trustee and the  trustee's  subsequent
calculation of the  pass-through  rates applicable to the Class A-1 Certificates
for the relevant Interest Accrual Period, in the absence of manifest error, will
be final and binding.

Principal Distributions on the Class A Certificates

      Except as  provided  below,  holders of the Class A  Certificates  will be
entitled to receive on each distribution date, in the priority described in this
prospectus  supplement  and  to  the  extent  of the  portion  of the  Available
Distribution   Amount   remaining   after  the   distribution  of  the  Interest
Distribution Amount is distributed,  a distribution allocable to principal equal
to the Principal Distribution Amount.

                                      S-59
<PAGE>

      Distributions   of  principal  on  the  Class  A   Certificates   on  each
distribution date will be made, after distribution of the Interest  Distribution
Amount, as follows:

           (i) the Principal  Distribution  Amount to the Class A-3 Certificates
      in reduction of its Certificate  Principal Balance,  until its Certificate
      Principal  Balance has been reduced to zero, an amount equal to the sum of
      the following:

                (A)  the  Lockout   Scheduled   Percentage   of  the  Class  A-3
           Certificates'  pro rata  share,  based on its  Certificate  Principal
           Balance relative to the aggregate  Certificate  Principal  Balance of
           all  classes  of  Certificates,  of  the  aggregate  of  the  amounts
           described in clauses [ ] of the definition of Principal  Distribution
           Amount; and

                (B)  the  Lockout   Prepayment   Percentage  of  the  Class  A-3
           Certificates'  pro rata  share,  based on its  Certificate  Principal
           Balance relative to the aggregate  Certificate  Principal  Balance of
           all classes of Class A Certificates,  of the aggregate of the amounts
           described in clause [ ] of the  definition of Principal  Distribution
           Amount;

provided  that if the  aggregate of the amounts set forth in the  definition  of
Principal  Distribution  Amount  is  more  than  the  balance  of the  Available
Distribution  Amount remaining after the Interest  Distribution  Amount has been
distributed, the amount paid to the Class A-3 Certificates under this clause (i)
shall be  reduced  by an amount  equal to the Class A-3  Certificates'  pro rata
share,  based on its aggregate  Certificate  Principal  Balance  relative to the
aggregate  Certificate  Principal  Balance of the Class A  Certificates  of that
difference; and

           (ii) the balance of the Principal Distribution Amount remaining after
      the  distributions,  if any,  described  in  clause  (i)  above  shall  be
      distributed in the following order of priority:

                (A) first,  concurrently,  Class A-1 and Class A-2 Certificates,
           on a pro rata basis, until their Certificate  Principal Balances have
           been reduced to zero; and

                (B) second, to the Class A-3 Certificates  until its Certificate
           Principal Balance has been reduced to zero.]

      On each  distribution  date,  the  financial  guaranty  insurer  shall  be
entitled  to receive,  after  payment to the Class A  Certificateholders  of the
Interest  Distribution  Amount and the  Principal  Distribution  Amount for such
distribution date, but before application of any Subordination  Increase Amount,
from the Excess Cash Flow to the extent available therefor, the aggregate of any
payments made with respect to the Class A Certificates by the financial guaranty
insurer  under  the  financial  guaranty  insurance  policy  to the  extent  not
previously reimbursed, plus interest thereon.

Overcollateralization Provisions



                                      S-60
<PAGE>

      The Pooling and Servicing  Agreement  requires that, on each  distribution
date,  Excess  Cash Flow,  if any,  be applied on such  distribution  date as an
accelerated  payment  of  principal  on the  Class A  Certificates,  but only as
follows:  The Excess Cash Flow for any  distribution  date will derive primarily
from the amount of interest  accrued on the mortgage  loans in excess of the sum
of (a) interest at the related  pass-through rates on the Certificate  Principal
Balances of the Class A  Certificates,  (b) the premium payable on the financial
guaranty  insurance  policy in respect  of the  mortgage  loans and (c)  accrued
servicing fees in respect of the mortgage loans, in each case in respect of such
distribution  date. Excess Cash Flow will be applied on any distribution date as
follows:

          o    first,  to pay to the  holders  of the Class A  Certificates  the
               principal  portion of Realized  Losses  incurred on the  mortgage
               loans for the preceding calendar month;

          o    second,  to pay to the financial  guaranty insurer any Cumulative
               Insurance Payments;

          o    third, to pay any Subordination Increase Amount;

          o    fourth, to pay the holders of the Class A Certificates the amount
               of any Prepayment Interest  Shortfalls  allocated thereto, to the
               extent  not  covered  by  the   Servicing  Fee  payable  on  such
               distribution date;

          o    fifth,  to pay  the  holders  of the  Class  A  Certificates  any
               Prepayment  Interest  Shortfalls   remaining  unpaid  from  prior
               distribution dates together with interest thereon; and

          o    sixth,  to pay to the  holders of the Class SB  Certificates  and
               Class R Certificates  any balance  remaining,  in accordance with
               the terms of the Pooling and Servicing Agreement.

The  application  of Excess Cash Flow to the payment of principal on the Class A
Certificates  has the effect of  accelerating  the  amortization  of the Class A
Certificates relative to the amortization of the mortgage loans.

      The Pooling and Servicing Agreement requires that the Excess Cash Flow, to
the extent  available  as  described  above,  will be applied as an  accelerated
payment of principal on the Class A Certificates to the extent that the Targeted
Subordinated  Amount  exceeds the  Subordinated  Amount as of such  distribution
date.

      Subordination   Reduction   Amount:   In  the  event  that  the   Targeted
Subordinated  Amount is permitted  to decrease or "step down" on a  distribution
date  in the  future,  a  portion  of the  principal  that  would  otherwise  be
distributed to the holders of the Class A Certificates on such distribution date
shall not be  distributed  to the  holders of the Class A  Certificates  on such
distribution date. This has the effect of decelerating  principal  distributions
to the Class A Certificates  relative to the amortization of the mortgage loans,
and of reducing the  Subordinated  Amount.  If, on any  distribution  date,  the
Excess  Subordinated  Amount  is,  or,  after  taking  into  account  all  other
distributions to be made on such  distribution  date would be, greater than zero
(i.e.,  the  Subordinated  Amount  is or would  be  greater  than  the  Targeted
Subordinated  Amount),

                                      S-61
<PAGE>

then any amounts  relating to principal  which would otherwise be distributed to
the holders of the Class A Certificates on such  distribution date shall instead
be distributed to the holders of the Class SB Certificates in an amount equal to
the Subordination Reduction Amount for such distribution date.

Financial Guaranty Insurance Policy

      The  following  summary of the terms of the financial  guaranty  insurance
policy does not  purport to be  complete  and is  qualified  in its  entirety by
reference to the financial guaranty insurance policy. The following  information
regarding  the  financial  guaranty  insurance  policy has been  supplied by the
financial guaranty insurer for inclusion in this prospectus supplement.

      Glossary of Terms:  As used in this section and in the financial  guaranty
insurance policy, the following terms shall have the following meanings:

          o    Agreement  - The  Pooling and  Servicing  Agreement,  dated as of
               _________,  _____, among the depositor,  the Seller, the Servicer
               and the trustee,  without  regard to any  amendment or supplement
               thereto  unless such amendment or supplement has been approved in
               writing by the financial guaranty insurer.

          o    Business  Day - Any day other than a Saturday,  a Sunday or a day
               on which banking  institutions in New York City or in the city in
               which  the  corporate  trust  office  of the  trustee  under  the
               Agreement  or the  financial  guaranty  insurer  is  located  are
               authorized or obligated by law or executive order to close.

          o    Deficiency  Amount - For the related Class A  Certificates  as of
               any distribution  date, (i) any shortfall in amounts available in
               the Payment  Account to pay interest  accrued during the Interest
               Accrual Period on the Certificate  Principal Balance of the Class
               A Certificates  at the applicable  Pass-Through  Rate, net of any
               interest shortfalls relating to the Relief Act and any Prepayment
               Interest Shortfalls  allocated to the Class A Certificates,  (ii)
               the principal portion of any Realized Loss allocated to the Class
               A Certificates and (iii) the Certificate Principal Balance of the
               Class  A   Certificates   to  the  extent  unpaid  on  the  final
               distribution  date  or  earlier  termination  of the  trust  fund
               pursuant  to  the  terms  of  the  Agreement.   For  purposes  of
               determining the Deficiency  Amount,  the final  distribution date
               will be the distribution date in ____________.

          o    Holder - Any person who is the registered or beneficial  owner of
               any Class A Certificate  and who, on the applicable  distribution
               date, is entitled under the terms of the Class A Certificates  to
               payment thereunder.

          o    Insured  Amount - As of any  distribution  date,  any  Deficiency
               Amount.

          o    Notice - The telephonic or telegraphic notice, promptly confirmed
               in writing  by  telecopy  substantially  in the form of Exhibit A
               attached to the financial guaranty insurance policy, the original
               of which is  subsequently  delivered by  registered  or



                                      S-62
<PAGE>

     certified  mail from the trustee  specifying the Insured Amount which shall
     be due and owing on the applicable distribution date.

      Capitalized terms used in the financial  guaranty insurance policy and not
otherwise  defined in the  financial  guaranty  insurance  policy shall have the
meanings set forth in the Agreement as of the date of execution of the financial
guaranty insurance policy,  without giving effect to any subsequent amendment to
or modification of the Agreement  unless the amendment or modification  has been
approved in writing by the financial guaranty insurer.

      The financial  guaranty  insurer,  in  consideration of the payment of the
premium  and subject to the terms of the related  financial  guaranty  insurance
policy, thereby unconditionally and irrevocably guarantees to any Holder that an
amount  equal  to each  full and  complete  Insured  Amount  will be paid to the
trustee or its  successor,  as trustee for the Holders.  The financial  guaranty
insurer's  obligations  under each  financial  guaranty  insurance  policy for a
particular  Insured  Amount shall be discharged to the extent funds equal to the
applicable Insured Amount are received by the trustee, whether or not such funds
are properly  applied by the trustee.  Insured Amounts shall be paid only at the
time set forth in each financial  guaranty  insurance policy, and no accelerated
Insured  Amounts  shall be paid  regardless of any  acceleration  of the Class A
Certificates,  unless such  acceleration  is at the sole option of the financial
guaranty  insurer.  The financial  guaranty  insurance policy does not cover any
interest   shortfalls   relating  to  the  Relief  Act  or  Prepayment  Interest
Shortfalls.

      Notwithstanding the foregoing paragraph,  the financial guaranty insurance
policy does not cover shortfalls,  if any,  attributable to the liability of the
trust fund, any REMIC or the trustee for withholding  taxes,  if any,  including
interest and penalties in respect of any such liability.

      The  financial  guaranty  insurer will pay any amounts  payable  under the
financial  guaranty  insurance  policy no later than 12:00  noon,  New York City
time,  on the later of the  distribution  date on which the  related  Deficiency
Amount,  as defined below,  is due or the Business Day following  receipt in New
York,  New York on a Business Day of a Notice;  provided  that if such Notice is
received  after 12:00 noon, New York City time, on such Business Day, it will be
deemed to be received on the following Business Day. If any such Notice received
is not in proper form or is otherwise  insufficient  for the purpose of making a
claim under the financial  guaranty  insurance  policy it shall be deemed not to
have been received for purposes of this  paragraph,  and the financial  guaranty
insurer  shall  promptly  so advise the  trustee  and the  trustee may submit an
amended Notice.

      Insured Amounts due under the financial guaranty insurance policy,  unless
otherwise stated in the financial guaranty insurance policy, are to be disbursed
by the  financial  guaranty  insurer to the  trustee on behalf of the Holders by
wire  transfer  of  immediately  available  funds in the  amount of the  Insured
Amount.

      The financial guaranty insurance policy is being issued under and pursuant
to and shall be  construed  under,  the laws of the  State of New York,  without
giving effect to the conflict of laws principles thereof.

                                      S-63
<PAGE>

      The financial  guaranty insurance policy is not cancelable for any reason.
The premium on the financial guaranty insurance policy is not refundable for any
reason including payment, or provision being made for payment, prior to maturity
of the related Class A Certificates.

Allocation of Losses; Subordination

      Subject to the terms thereof, the financial guaranty insurance policy will
cover all Realized Losses allocated to the Class A Certificates. If payments are
not made as required under the financial  guaranty  insurance  policy,  Realized
Losses will be  allocable  to the Class A  Certificates  based on the  following
priorities.

      The  subordination  provided to the Class A  Certificates  by the Class SB
Certificates will cover Realized Losses on the mortgage loans that are Defaulted
Mortgage Losses, Fraud Losses,  Bankruptcy Losses and Special Hazard Losses. Any
Realized Losses which are not Excess Special Hazard Losses, Excess Fraud Losses,
Excess Bankruptcy Losses or Extraordinary Losses will be allocated as follows:

          o    first, to the Excess Cash Flow for the related distribution date;
               and

          o    second, to the Class SB Certificates

and the  remainder of the Realized  Losses  among all the  remaining  classes of
Class A Certificates on a pro rata basis.

      Any allocation of a Realized Loss, other than a Debt Service Reduction, to
a certificate will be made by reducing:

          o    its Certificate  Principal Balance,  in the case of the principal
               portion of the Realized Loss, in each case until the  Certificate
               Principal Balance of that class has been reduced to zero, and

          o    the  Accrued  Certificate  Interest  thereon,  in the case of the
               interest portion of the Realized Loss, by the amount so allocated
               as of the distribution  date occurring in the month following the
               calendar month in which the Realized Loss was incurred.

In addition, any allocation of a Realized Loss to a Class A Certificate may also
be made  by  operation  of the  payment  priority  to the  Class A  Certificates
described under "--Principal  Distributions on the Class A Certificates" in this
prospectus supplement.

      As  used  in  this  prospectus  supplement,  subordination  refers  to the
provisions  discussed  above for the  sequential  allocation of Realized  Losses
among the various classes, as well as all provisions effecting those allocations
including the priorities for distribution of cash flows in the amounts described
in this prospectus supplement.

      As described in the  prospectus,  in some  circumstances  the servicer may
permit a servicing  modification--the  modification of a defaulted mortgage loan
to reduce the applicable  mortgage rate or to reduce its  outstanding  principal
amount. Any principal reduction of this type shall constitute a Realized Loss at


                                      S-64
<PAGE>

the time of the  reduction,  and the  amount by which  each  monthly  payment is
reduced by any mortgage rate reduction  shall  constitute a Realized Loss in the
month in which each such reduced monthly payment is due.

      Servicing  modification  reductions  shall be allocated when incurred,  as
provided above, in the same manner as other Realized Losses as described in this
prospectus supplement. Any Advances made on any mortgage loan will be reduced to
reflect any related servicing  modifications  previously made. The mortgage rate
and Net Loan Rate as to any  mortgage  loan will be deemed  not  reduced  by any
servicing modification,  so that the calculation of Accrued Certificate Interest
payable  on the  Class A  Certificates  will not be  affected  by the  servicing
modification.

      Any Excess Special Hazard Losses,  Excess Fraud Losses,  Excess Bankruptcy
Losses,  Extraordinary  Losses  or  other  losses  of  a  type  not  covered  by
subordination  will  be  allocated  on a  pro  rata  basis  among  the  Class  A
Certificates  and in an aggregate  amount equal to the  percentage  of that loss
equal  to the  then  aggregate  Certificate  Principal  Balance  of the  Class A
Certificates  divided  by the then  aggregate  Stated  Principal  Balance of the
mortgage loans, in each case subject to the limitations set forth in the Pooling
and  Servicing  Agreement,  and the  remainder  of the  Realized  Losses will be
allocated to the Class SB Certificates.

      An  allocation  of a Realized Loss on a "pro rata basis" among two or more
classes  of  certificates  means  an  allocation  to each of  those  classes  of
certificates on the basis of its then outstanding  Certificate Principal Balance
prior to giving effect to distributions to be made on that  distribution date in
the case of an allocation of the principal  portion of a Realized Loss, or based
on the Accrued Certificate Interest thereon in respect of that distribution date
in the case of an allocation of the interest portion of a Realized Loss.

      In  order  to  maximize  the  likelihood  of  distribution  in full of the
Interest  Distribution  Amount  and  Principal   Distribution  Amount,  on  each
distribution date, holders of Class A Certificates have a right to distributions
of the Available  Distribution Amount that is prior to the rights of the holders
of the Class SB Certificates  and Class R Certificates,  to the extent necessary
to satisfy the Interest Distribution Amount and Principal Distribution Amount.

      The Special  Hazard Amount shall  initially be equal to $ . As of any date
of  determination  following the cut-off date,  the Special  Hazard Amount shall
equal $ less the sum of (A) any amounts allocated through subordination relating
to Special Hazard Losses and (B) the Adjustment  Amount.  The Adjustment  Amount
will be equal to an  amount  calculated  under  the  terms  of the  pooling  and
servicing agreement.

      The Fraud Loss Amount  shall  initially  be equal to $ . As of any date of
determination  after the cut-off  date,  the Fraud Loss  Amount  shall equal (X)
prior to the third  anniversary  of the cut-off date an amount equal to ____% of
the aggregate  principal  balance of all of the mortgage loans as of the cut-off
date minus the  aggregate  amounts  allocated  through  Subordination  for Fraud
Losses  up to that  date of  determination  and (Y) from the  third to the fifth
anniversary  of the cut-off  date,  an amount equal to (1) the lesser of (a) the
Fraud Loss Amount as of the most recent  anniversary of the cut-off date and (b)
____% of the aggregate  principal balance of all of the mortgage loans as of the
most recent  anniversary  of the cut-off  date minus (2) the  aggregate  amounts
allocated  through   subordination  for  Fraud  Losses  since  the



                                      S-65
<PAGE>

most recent anniversary of the cut-off date up to that date of determination. On
and after the fifth anniversary of the cut-off date, the Fraud Loss Amount shall
be zero and Fraud Losses shall not be allocated through subordination.

      The  Bankruptcy  Amount will  initially  be equal to $ . As of any date of
determination  on or after  the  first  anniversary  of the  cut-off  date,  the
Bankruptcy  Amount will equal the  excess,  if any, of (1) the lesser of (a) the
Bankruptcy  Amount  as of the  business  day  next  preceding  the  most  recent
anniversary of the cut-off date and (b) an amount  calculated under the terms of
the pooling and servicing agreement, which amount as calculated will provide for
a  reduction  in the  Bankruptcy  Amount,  over  (2)  the  aggregate  amount  of
Bankruptcy  Losses  allocated  solely  to  the  Class  SB  Certificates  through
subordination since that anniversary.

      Realized Losses  allocated to the Class A Certificates  will be covered by
the financial  guaranty  insurance policy. In the event payments are not made as
required  under such  policy,  these  losses will be borne by the holders of the
Class A Certificates.

      With respect to any defaulted  mortgage  loan that is finally  liquidated,
through  foreclosure  sale,  disposition  of the related  mortgaged  property if
acquired on behalf of the certificateholders by deed in lieu of foreclosure,  or
otherwise,  the amount of loss  realized,  if any, will equal the portion of the
Stated Principal Balance  remaining,  if any, plus its interest through the last
day of the month in which  that  mortgage  loan was  finally  liquidated,  after
application  of all  amounts  recovered,  net  of  amounts  reimbursable  to the
servicer or the subservicer for expenses,  including  attorneys'  fees,  towards
interest and principal owing on the mortgage loan.

      Notwithstanding  the foregoing,  the provisions  relating to subordination
will not be  applicable  in  connection  with a  Bankruptcy  Loss so long as the
servicer has notified the trustee in writing that:

          o    the servicer is  diligently  pursuing any remedies that may exist
               in  connection  with  the  representations  and  warranties  made
               regarding the related mortgage loan and

          o    either:

          o    the  related  mortgage  loan is not in  default  with  regard  to
               payments due thereunder or

          o    delinquent  payments of principal and interest  under the related
               mortgage loan and any premiums on any  applicable  primary hazard
               insurance policy and any related escrow payments relating to that
               mortgage  loan  are  being  advanced  on a  current  basis by the
               servicer or a subservicer.

[Advances

      Prior to each distribution date, the servicer is required to make Advances
which were due on the mortgage loans on the  immediately  preceding due date and
delinquent on the business day next preceding the related determination date.

                                      S-66
<PAGE>

      These  Advances are required to be made only to the extent they are deemed
by the  servicer to be  recoverable  from related  late  collections,  Insurance
Proceeds or  Liquidation  Proceeds.  The purpose of making these  Advances is to
maintain a regular cash flow to the certificateholders, rather than to guarantee
or insure against losses. The servicer will not be required to make any Advances
for  reductions in the amount of the monthly  payments on the mortgage loans due
to Debt  Service  Reductions  or the  application  of the  Relief Act or similar
legislation  or  regulations.  Any failure by the servicer to make an Advance as
required under the pooling and servicing  agreement will  constitute an event of
default thereunder,  in which case the trustee,  as successor servicer,  will be
obligated to make any Advance,  in accordance  with the terms of the pooling and
servicing agreement.

      All Advances  will be  reimbursable  to the  servicer on a first  priority
basis from  either (a) late  collections,  Insurance  Proceeds  and  Liquidation
Proceeds from the mortgage loan as to which such  unreimbursed  Advance was made
or (b) as to any Advance that remains unreimbursed in whole or in part following
the final  liquidation of the related mortgage loan, from any amounts  otherwise
distributable on any of the Class A Certificates.]

                         THE FINANCIAL GUARANTY INSURER

      The following  information  has been  supplied by the  financial  guaranty
insurer for inclusion in this Prospectus  Supplement.  No representation is made
by the depositor, the underwriters or any of their affiliates as to the accuracy
or completeness of such information.

                     [financial guaranty insurer discloser]

                   CERTAIN YIELD AND PREPAYMENT CONSIDERATIONS

General

      The yields to maturity and the aggregate  amount of  distributions  on the
Class A  Certificates  will be  affected  by the rate and  timing  of  principal
payments on the  mortgage  loans,  the amount and timing of  mortgagor  defaults
resulting in Realized Losses and by adjustments to the mortgage rates.  The rate
of default of mortgage loans secured by second liens may be greater than that of
mortgage loans secured by first liens. The yields may be adversely affected by a
higher or lower than  anticipated  rate of  principal  payments on the  mortgage
loans in the trust fund.  The rate of principal  payments on the mortgage  loans
will in turn be affected by the  amortization  schedules of the mortgage  loans,
the rate and  timing  of  mortgagor  prepayments  on the  mortgage  loans by the
mortgagors, liquidations of defaulted mortgage loans and repurchases of mortgage
loans due to breaches of some representations and warranties.

      The  timing  of  changes  in the  rate of  prepayments,  liquidations  and
repurchases of the mortgage  loans may, and the timing of Realized  Losses will,
significantly  affect  the yield to an  investor,  even if the  average  rate of
principal  payments  experienced  over  time is  consistent  with an  investor's
expectation.  In addition, the rate of prepayments of the mortgage loans and the
yield to investors on the certificates may be affected by refinancing  programs,
which  may  include  general  or  targeted  solicitations,  as  described  under
"Maturity and Prepayment  Considerations" in the prospectus.  Since the rate and
timing of principal  payments on the


                                      S-67
<PAGE>

mortgage  loans will  depend on future  events and on a variety of  factors,  as
described  in this  prospectus  supplement  and in the  prospectus  under "Yield
Considerations"  and "Maturity and Prepayment  Considerations," no assurance can
be given as to the rate or the  timing  of  principal  payments  on the  Class A
Certificates.

      The amount of Excess Cash Flow may be adversely affected by the prepayment
of mortgage loans with higher  mortgage  rates.  Any reduction of this type will
reduce  the  amount of Excess  Cash Flow  that is  available  to cover  Realized
Losses,  increase  overcollateralization  on the  related  classes  of  Class  A
Certificates and cover Prepayment Interest Shortfalls,  to the extent and in the
manner described in this prospectus supplement. See "Description of the Mortgage
Pool--General,"   "Description   of   the    Certificates--Overcollateralization
Provisions"  and  "--Allocation  of Losses;  Subordination"  in this  prospectus
supplement.

      The Class A Certificates are subject to various  priorities for payment of
principal as described in this prospectus supplement. Distributions of principal
on classes of Class A Certificates having an earlier priority of payment will be
affected by the rates of prepayment  of the mortgage  loans early in the life of
the mortgage pool. The timing of commencement of principal distributions and the
weighted average lives of classes of Class A Certificates  with a later priority
of payment will be affected by the rates of  prepayment  of the  mortgage  loans
both  before and after the  commencement  of  principal  distributions  on those
classes.  In addition,  the yield to maturity of the Class A  Certificates  will
depend on whether,  to what extent, and the timing with respect to which, Excess
Cash  Flow  is  used  to  accelerate  payments  of  principal  on  the  Class  A
Certificates or any Subordination Reduction Amount is released. See "Description
of  the  Certificates--Overcollateralization   Provisions"  in  this  prospectus
supplement.

      The mortgage  loans in most cases may be prepaid by the  mortgagors at any
time without payment of any prepayment fee or penalty, although a portion of the
mortgage  loans  provide for payment of a  prepayment  charge,  which may have a
substantial  effect  on the rate of  prepayment  of those  mortgage  loans.  See
"Description  of the  Mortgage  Pool--Mortgage  Pool  Characteristics"  in  this
prospectus supplement.

      Most of the mortgage loans contain due-on-sale clauses. As described under
"Description  of  the  Certificates--Principal  Distributions  on  the  Class  A
Certificates" in this prospectus  supplement,  during specified periods all or a
disproportionately  large  percentage of principal  prepayments  on the mortgage
loans will be allocated among the Class A  Certificates,  other than the Lockout
Certificates,  and during  specified  periods no  principal  prepayments  on the
mortgage loans will be distributed to the Lockout Certificates.  Furthermore, if
the Certificate  Principal Balances of the Class A Certificates,  other than the
Lockout  Certificates,  have been reduced to zero, the Lockout Certificates may,
under some  circumstances,  receive all  mortgagor  prepayments  made during the
preceding calendar month.

      Prepayments,  liquidations and purchases of the mortgage loans will result
in  distributions  to holders of the Class A Certificates  of principal  amounts
which would  otherwise be distributed  over the remaining  terms of the mortgage
loans.  Factors affecting  prepayment,  including defaults and liquidations,  of
mortgage  loans include  changes in mortgagors'  housing  needs,  job transfers,
unemployment, mortgagors' net equity in the mortgaged properties, changes in the
value of the mortgaged properties, mortgage market interest rates, solicitations
and  servicing  decisions.  In


                                      S-68
<PAGE>

addition,  if prevailing  mortgage rates fell  significantly  below the mortgage
rates on the mortgage loans,  the rate of prepayments,  including  refinancings,
would be expected to increase.  Conversely,  if prevailing  mortgage  rates rose
significantly  above  the  mortgage  rates on the  mortgage  loans,  the rate of
prepayments  on the mortgage  loans would be expected to decrease.  Furthermore,
since  mortgage  loans  secured  by  second  liens are not  generally  viewed by
borrowers as permanent  financing and  generally  carry a high rate of interest,
the  mortgage  loans  secured by second  liens may  experience  a higher rate of
prepayment than traditional first lien mortgage loans. Prepayment of the related
first lien may also affect the rate of prepayments in the mortgage loans.

      The rate of defaults on the  mortgage  loans will also affect the rate and
timing of principal  payments on the  mortgage  loans.  In general,  defaults on
mortgage  loans are  expected  to occur with  greater  frequency  in their early
years.  The rate of default of mortgage  loans secured by second liens is likely
to be greater  than that of mortgage  loans  secured by  traditional  first lien
mortgage  loans,  particularly  in the case of mortgage loans with high combined
LTV ratios or low junior ratios. The rate of default on mortgage loans which are
refinance or reduced  documentation  mortgage loans,  and on mortgage loans with
high  LTV  ratios,  may be  higher  than for  other  types  of  mortgage  loans.
Furthermore,  the rate and timing of prepayments,  defaults and  liquidations on
the  mortgage  loans will be affected by the general  economic  condition of the
region of the country in which the related mortgaged properties are located. The
risk of  delinquencies  and loss is greater and  prepayments  are less likely in
regions where a weak or  deteriorating  economy exists,  as may be evidenced by,
among other factors,  increasing  unemployment or falling property  values.  See
"Maturity and Prepayment Considerations" in the prospectus. In addition, because
borrowers  of Balloon  Loans are  required  to make a  relatively  large  single
payment upon  maturity,  it is possible  that the default risk  associated  with
Balloon Loans is greater than that  associated  with  fully-amortizing  mortgage
loans. See "Risk Factors" in this prospectus supplement.

      To the extent that any losses are  incurred on any of the  mortgage  loans
that are not covered by the Excess Cash Flow,  a reduction  in the  Subordinated
Amount  or the  financial  guaranty  insurance  policy,  holders  of the Class A
Certificates  will bear the risk of losses resulting from default by mortgagors.
See "Risk  Factors--The  return on your  certificates  will be reduced if losses
exceed the credit enhancement available to your certificates" in this prospectus
supplement. Even where the financial guaranty insurance policy covers all losses
incurred on the mortgage loans, this coverage may accelerate  principal payments
on the Class A  Certificates,  thus  reducing the  weighted  average life of the
Class A Certificates.

      The periodic increase in interest paid by the mortgagor of a Buy-Down Loan
may increase the risk of default with respect to the related  mortgage loan. See
"Yield Considerations" in the prospectus.

      The  amount  of  interest  otherwise  payable  to  holders  of the Class A
Certificates  will be  reduced  by any  interest  shortfalls  to the  extent not
covered  by  subordination  or  the  servicer,   including  Prepayment  Interest
Shortfalls.  These shortfalls will not be offset by a reduction in the servicing
fees  payable  to the  servicer  or  otherwise,  except  as  described  in  this
prospectus  supplement with respect to some Prepayment Interest Shortfalls.  See
"Yield   Considerations"   in   the   prospectus   and   "Description   of   the
Certificates--Interest  Distributions"  in  this  prospectus

                                      S-69
<PAGE>

supplement  for a  discussion  of the  effect of  principal  prepayments  on the
mortgage loans on the yield to maturity of the Class A Certificates and possible
shortfalls in the collection of interest.

      In  addition,  the  yield  to  maturity  on  each  class  of the  Class  A
Certificates  will depend on, among other things,  the price paid by the holders
of the Class A  Certificates  and the related  pass-through  rate. The extent to
which  the  yield  to  maturity  of any  Class A  Certificate  is  sensitive  to
prepayments will depend,  in part, upon the degree to which it is purchased at a
discount or premium. In general, if a class of Class A Certificates is purchased
at a premium and  principal  distributions  thereon  occur at a rate faster than
assumed at the time of purchase, the investor's actual yield to maturity will be
lower than anticipated at the time of purchase.  Conversely, if a class of Class
A Certificates  is purchased at a discount and principal  distributions  thereon
occur at a rate  slower than  assumed at the time of  purchase,  the  investor's
actual yield to maturity will be lower than anticipated at the time of purchase.
For additional  considerations  relating to the yield on the  certificates,  see
"Yield  Considerations"  and "Maturity  and  Prepayment  Considerations"  in the
prospectus.

      Because the  mortgage  rates on the  mortgage  loans and the  pass-through
rates on the Class A Certificates  (other than the Class A-1  Certificates)  are
fixed,  the rates will not  change in  response  to  changes in market  interest
rates.  Accordingly,  if market  interest  rates or market yields for securities
similar  to the  offered  certificates  were to rise,  the  market  value of the
offered certificates may decline.

      The yield to investors on the Class A-1 Certificates  will be sensitive to
fluctuations in the level of LIBOR and the pass-through rate will be capped. See
"Risk  Factors--The  yield on your certificates will be affected by the specific
characteristics  that  apply  to  that  class,   discussed  below  -  Class  A-1
Certificates".  A number of factors affect the performance of any index, such as
LIBOR,  and may  cause  such  index to move in a  manner  different  from  other
indices.  To the extent that any index may reflect  changes in the general level
of  interest  rates  less  quickly  than  other  indices,  in a period of rising
interest rates,  increases in the yield to the Class A-1  Certificateholders due
to such rising  interest rates may occur later than that which would be produced
by other indices.  Moreover, an increase in the level of LIBOR will increase the
likelihood  that the  pass-through  rate on the Class A-1  Certificates  will be
limited  by the  weighted  average  Net  Loan  Rate  on the  mortgage  loans  in
accordance  with such index,  than of mortgage  loans which adjust in accordance
with other indices.

      Class A Certificates: The rate and timing of principal payments on and the
weighted average lives of the Class A Certificates will be affected primarily by
the rate and timing of  principal  payments,  including  prepayments,  defaults,
liquidations and purchases, on the mortgage loans.

      Lockout  Certificates:  Investors  in the Lockout  Certificates  should be
aware that because the Lockout  Certificates do not receive any distributions of
payments of  principal  prior to the  distribution  date  occurring in , and may
receive a disproportionately small percentage of principal prepayments until the
distribution date occurring in ______, unless the Certificate Principal Balances
of the Class A  Certificates,  other than the  Lockout  Certificates,  have been
reduced to zero, the weighted average life of the Lockout  Certificates  will be
longer than would  otherwise be the case.  The effect on the market value of the
Lockout  Certificates  of


                                      S-70
<PAGE>

changes in market interest rates or market yields for similar securities will be
greater  than for other  classes of Class A  Certificates  entitled to principal
distributions.

      Assumed Final  Distribution Date: The assumed final distribution date with
respect  to each  class  of the  Class A  Certificates  is 25,  ,  which  is the
distribution date immediately  following the latest scheduled  maturity date for
any  mortgage  loan.  No  event  of  default,   change  in  the  priorities  for
distribution among the various classes or other provisions under the pooling and
servicing  agreement  will  arise or become  applicable  solely by reason of the
failure  to retire  the  entire  Certificate  Principal  Balance of any class of
certificates on or before its assumed final distribution date.

      The actual final  distribution  date with respect to each class of Class A
Certificates   could  occur   significantly   earlier  than  the  assumed  final
distribution date for that class because:

          o    Excess  Cash Flow will be used to make  accelerated  payments  of
               principal, i.e. Subordination Increase Amounts, to the holders of
               the Class A Certificates,  which payments will have the effect of
               shortening the weighted average lives of the Class A Certificates
               of each class,

          o    prepayments are likely to occur,  which will also have the effect
               of  shortening  the  weighted   average  lives  of  the  Class  A
               Certificates,  and

          o    the  servicer  may  cause a  termination  of the  trust  when the
               aggregate Stated  Principal  Balance of the mortgage loans in the
               trust is less than 10% of the aggregate cut-off date balance.

      Weighted Average Life:  Weighted average life refers to the average amount
of time that will  elapse from the date of issuance of a security to the date of
distribution  to the  investor  of  each  dollar  distributed  in  reduction  of
principal of the security  assuming no losses.  The weighted average life of the
Class A  Certificates  will be influenced  by, among other  things,  the rate at
which  principal  of the  mortgage  loans is paid,  which  may be in the form of
scheduled amortization, prepayments or liquidations.

      Prepayments  on  mortgage  loans  are  commonly  measured  relative  to  a
prepayment standard or model. The model used in this prospectus supplement,  the
prepayment speed assumption, represents an assumed rate of prepayment each month
relative to the then  outstanding  principal  balance of a pool of new  mortgage
loans. A prepayment  assumption of 100% PSA assumes constant prepayment rates of
0.20% per annum of the then outstanding  principal balance of the mortgage loans
in the first month of the life of the mortgage loans and an additional 0.20% per
annum in each month thereafter until the 30th month. Beginning in the 30th month
and in each month  thereafter  during the life of the mortgage  loans , 100% PSA
assumes a constant  prepayment  rate of 6% per annum each month.  As used in the
table  below,  "0%  PSA"  assumes  prepayment  rates  equal  to  0%  of  PSA--no
prepayments.  Correspondingly,  "100% PSA" and " % PSA" assumes prepayment rates
equal  to 100% of PSA and % of PSA,  respectively,  and so  forth.  PSA does not
purport to be a historical  description of prepayment experience or a prediction
of the anticipated  rate of prepayment of any pool of mortgage loans , including
the mortgage loans .

      The table  captioned  "Percent of Initial  Certificate  Principal  Balance
Outstanding at the Following  Percentages of PSA" has been prepared on the basis
of  assumptions  as listed in this



                                      S-71
<PAGE>

paragraph  regarding the weighted average  characteristics of the Mortgage loans
that  are  expected  to be  included  in  the  trust  fund  as  described  under
"Description  of the  Mortgage  Pool" in this  prospectus  supplement  and their
performance.  The table assumes, among other things, that: (i) as of the date of
issuance of the Class A  Certificates,  the  mortgage  loans have the  following
characteristics:

Aggregate principal            $               $
   balance

Weighted average                   %                       %
   mortgage rate

Weighted average                   %                       %
   servicing fee rate

Weighted average
   original term to
   maturity (months)

Weighted average
   remaining term to
   maturity (months)


       (ii)except  with  respect  to the  Balloon  Loans the  scheduled  monthly
payment  for  each  mortgage  loan has been  based on its  outstanding  balance,
mortgage  rate and  remaining  term to maturity,  so that the mortgage loan will
amortize in amounts  sufficient  for its repayment  over its  remaining  term to
maturity;  (iii) none of the unaffiliated sellers, the servicer or the depositor
will  repurchase  any mortgage  loan,  as described  under "The Trust  Fund--The
Mortgage  Pools" and  "Description of the  Certificates--Assignment  of Mortgage
Loans" in the prospectus,  and neither the servicer nor the depositor  exercises
any option to purchase the mortgage loans and thereby cause a termination of the
trust fund; (iv) there are no  delinquencies  or Realized Losses on the mortgage
loans , and  principal  payments on the mortgage  loans will be timely  received
together with prepayments, if any, at the respective constant percentages of PSA
set forth in the table;  (v) there is no  Prepayment  Interest  Shortfall or any
other interest shortfall in any month; (vi) payments on the certificates will be
received on the 25th day of each month, commencing in _________;  (vii) payments
on  the  mortgage  loans  earn  no  reinvestment  return;  (viii)  there  are no
additional  ongoing trust fund expenses  payable out of the trust fund; and (ix)
the  certificates  will be purchased on  _______________,  _______.  Clauses (i)
through (ix) above are collectively referred to as the structuring assumptions.

      The actual  characteristics  and  performance  of the mortgage  loans will
differ from the  assumptions  used in  constructing  the table  below,  which is
hypothetical  in nature and is provided  only to give a general sense of how the
principal  cash flows might  behave  under  varying  prepayment  scenarios.  For
example,  it is very unlikely that the mortgage  loans will prepay at a constant
level of PSA until maturity or that all of the mortgage loans will prepay at the
same  level of PSA.  Moreover,  the  diverse  remaining  terms to  maturity  and
mortgage rates of the mortgage  loans could produce  slower or faster  principal
distributions than indicated in the table at the various constant percentages of
PSA  specified,  even if the  weighted  average  remaining  term to maturity and
weighted  average  mortgage  rate of the  mortgage  loans  are as  assumed.  Any


                                      S-72
<PAGE>

difference   between  the  assumptions  and  the  actual   characteristics   and
performance of the mortgage loans, or actual prepayment or loss experience, will
affect the percentages of initial  Certificate  Principal  Balances  outstanding
over time and the weighted average lives of the classes of Class A Certificates.

      In accordance with the foregoing discussion and assumptions, the following
table indicates the weighted average life of each class of Class A Certificates,
and sets forth the percentages of the initial  Certificate  Principal Balance of
each class of Class A Certificates  that would be outstanding  after each of the
distribution dates at the various percentages of PSA shown.

           Percent of Initial Certificate Principal Balance Outstanding

                       at the Following Percentages of PSA

                        Class A-1       Class A-2       Class A-3
DISTRIBUTION DATE     %     %    %     %    %    %     %    %     %
Initial Percentage
Weighted Average
Life in Years (**)

------------

o      Indicates a number that is greater than zero but less than 0.5%.

o     (Table continued on next page.)

**    The weighted  average life of a certificate  of any class is determined by
      (i)  multiplying the net reduction,  if any, of the Certificate  Principal
      Balance  by  the  number  of  years  from  the  date  of  issuance  of the
      certificate to the related distribution date, (ii) adding the results, and
      (iii)  dividing  the  sum by the  aggregate  of the net  reduction  of the
      Certificate Principal Balance described in (i) above.

      This  table  has  been  prepared  based  on the  structuring  assumptions,
including the assumptions relating to the characteristics and performance of the
mortgage loans,  which differ from their actual  characteristics,  and should be
read in conjunction therewith.

                         POOLING AND SERVICING AGREEMENT

General

      The  certificates  will be issued under a pooling and servicing  agreement
dated as of __________, ____, among the depositor, the seller, the servicer, and
__________,  as  trustee.  Reference  is made to the  prospectus  for  important
information  in  addition  to  that  described  in  this  prospectus  supplement
regarding the terms and  conditions  of the pooling and servicing  agreement and
the Class A Certificates.  The trustee will appoint ____________________to


                                      S-73
<PAGE>

serve as custodian in connection with the certificates. The Class A Certificates
will be  transferable  and  exchangeable  at the  corporate  trust office of the
trustee,  which will  serve as  certificate  registrar  and  paying  agent.  The
depositor will provide a prospective or actual certificateholder without charge,
on written  request,  a copy,  without  exhibits,  of the pooling and  servicing
agreement.  Requests  should be addressed to the President,  Credit Suisse First
Boston Mortgage Securities Corp., [ ].

Servicing and Other Compensation and Payment of Expenses

      The servicing  fees for each mortgage loan are payable out of the interest
payments on that mortgage  loan.  The  servicing  fees relating to each mortgage
loan  will be at  least  % per  annum  and  not  more  than % per  annum  of the
outstanding  principal  balance of that mortgage loan,  with a weighted  average
servicing fee of approximately % per annum.

      The servicer is obligated to pay some ongoing expenses associated with the
trust fund and incurred by the servicer in connection with its  responsibilities
under the pooling and servicing agreement. See "Description of the Certificates"
in the prospectus for information  regarding other possible  compensation to the
servicer and subservicers and for information  regarding expenses payable by the
servicer.

Voting Rights

      There are actions specified in the prospectus that may be taken by holders
of certificates  evidencing a specified percentage of all undivided interests in
the trust  fund and may be taken by  holders  of  certificates  entitled  in the
aggregate to that  percentage  of the voting  rights.  ___% of all voting rights
will be  allocated  among all holders of the Class A  Certificates,  ___% of all
voting  rights will be allocated  among all holders of the Class R  Certificates
and ___% of all voting  rights will be allocated  among all holders of the Class
SB  Certificates,  respectively,  in each case in proportion  to the  percentage
interests evidenced by their respective certificates.  The pooling and servicing
agreement  may be amended  without  the  consent  of the  holders of the Class R
Certificates in specified circumstances.

Termination

      The circumstances  under which the obligations  created by the pooling and
servicing  agreement  will terminate  relating to the Class A  Certificates  are
described in "Description of the  Certificates--Termination"  in the prospectus.
The  servicer  will  have the  option,  on any  distribution  date on which  the
aggregate Stated Principal Balance of the mortgage loans is less than 10% of the
aggregate principal balance of the mortgage loans as of the cut-off date, either
to purchase  all  remaining  mortgage  loans and other assets in the trust fund,
except  for the  policy,  thereby  effecting  early  retirement  of the  Class A
Certificates  or to purchase,  in whole but not in part, the  certificates.  Any
such purchase of mortgage loans and other assets of the trust fund shall be made
at a price equal to the sum of (a) 100% of the unpaid principal  balance of each
mortgage  loan or the fair  market  value of the  related  underlying  mortgaged
properties  with respect to defaulted  mortgage  loans as to which title to such
mortgaged  properties  has been  acquired if such fair market value is less than
such unpaid principal balance,  net of any unreimbursed  Advance attributable to
principal, as of the date of repurchase plus (b) accrued


                                      S-74
<PAGE>

interest  thereon at the Net Loan Rate to, but not  including,  the first day of
the month in which the repurchase  price is distributed plus (c) any amounts due
to the financial guaranty insurer under the insurance and indemnity agreement.

      Distributions  on the  certificates  relating to any optional  termination
will be paid,  first,  to the Class A Certificates  and second,  to the Class SB
Certificates  in the order of their payment  priority.  The proceeds of any such
distribution  may not be sufficient to distribute  the full amount to each class
of  certificates if the purchase price is based in part on the fair market value
of the underlying mortgaged property and the fair market value is less than 100%
of the unpaid  principal  balance of the related  mortgage loan. Any purchase of
mortgage  loans  and  termination  of the  trust  requires  the  consent  of the
financial  guaranty insurer if it would result in a draw on the policy. Any such
purchase  of the  certificates  will be made at a price  equal  to 100% of their
Certificate  Principal  Balance  plus  the  sum  of  interest  thereon  for  the
immediately   preceding   Interest   Accrual   Period  at  the   then-applicable
pass-through rate and any previously unpaid Accrued Certificate  Interest.  Upon
the purchase of such  certificates or at any time  thereafter,  at the option of
the servicer,  the mortgage loans may be sold, thereby effecting a retirement of
the  certificates  and the termination of the trust fund, or the certificates so
purchased may be held or resold by the servicer or the depositor.

      Upon  presentation and surrender of the Class A Certificates in connection
with the termination of the trust fund or a purchase of  certificates  under the
circumstances  described  in the two  preceding  paragraphs,  the holders of the
Class A Certificates  will receive an amount equal to the Certificate  Principal
Balance  of that class  plus  interest  thereon  for the  immediately  preceding
Interest  Accrual  Period at the  then-applicable  pass-through  rate,  plus any
previously unpaid Accrued Certificate  Interest.  However,  distributions to the
holders  of the most  subordinate  class  of  certificates  outstanding  will be
reduced, as described in the preceding paragraph, in the case of the termination
of the trust fund resulting from a purchase of all the assets of the trust fund.

                     MATERIAL FEDERAL INCOME TAX CONSEQUENCES

____________________,  counsel to the depositor,  has filed with the depositor's
registration  statement an opinion to the effect that,  assuming compliance with
all  provisions of the pooling and servicing  agreement,  for federal income tax
purposes,  the trust fund will  qualify as a REMIC  under the  Internal  Revenue
Code.

For federal income tax purposes:

          o    the  Class R  Certificates  will  constitute  the  sole  class of
               "residual interests" in the REMIC and

          o    each class of Class A Certificates  and the Class SB Certificates
               will represent  ownership of "regular interests" in the REMIC and
               will be treated as debt instruments of the REMIC

      See "Material  Federal Income Tax  Consequences--Classification  of REMICs
and FASITs" in the prospectus.

                                      S-75
<PAGE>

      For federal income tax purposes,  the Class  Certificates will, [the Class
Certificates  may] [and all other Classes of Class A  Certificates  will not] be
treated as having been issued  with  original  issue  discount.  The  prepayment
assumption  that will be used in  determining  the rate of accrual  of  original
issue  discount,  market  discount and premium,  if any, for federal  income tax
purposes  will be based on the  assumption  that,  subsequent to the date of any
determination  the  mortgage  loans  will  prepay at a rate  equal to % PSA.  No
representation  is made that the  mortgage  loans will prepay at that rate or at
any other rate.  See "Material  Federal  Income Tax  Consequences--General"  and
"--Taxation  of Owners of REMIC and FASIT Regular  Certificates--Original  Issue
Discount" in the prospectus.

      If the method for  computing  original  issue  discount  described  in the
prospectus  results  in a  negative  amount  for any  period  with  respect to a
certificateholder,  the amount of  original  issue  discount  allocable  to that
period would be zero and the certificateholder  will be permitted to offset that
negative  amount  only  against  future   original  issue   discount,   if  any,
attributable to those certificates.

      In some  circumstances  the OID  regulations  permit  the holder of a debt
instrument to recognize original issue discount under a method that differs from
that  used by the  issuer.  Accordingly,  it is  possible  that the  holder of a
certificate  may be able to  select  a method  for  recognizing  original  issue
discount that differs from that used by the servicer in preparing reports to the
certificateholders and the IRS.

      Some of the  classes of Class A  Certificates  may be treated  for federal
income tax  purposes as having  been issued at a premium.  Whether any holder of
one of those  classes of  certificates  will be treated as holding a certificate
with  amortizable bond premium will depend on the  certificateholder's  purchase
price and the distributions  remaining to be made on the certificate at the time
of its  acquisition  by the  certificateholder.  Holders  of  those  classes  of
certificates  should  consult their tax advisors  regarding the  possibility  of
making an election to amortize such premium.  See "Material  Federal  Income Tax
Consequences--Taxation  of Owners of REMIC and FASIT Regular  Certificates"  and
"--Premium" in the prospectus.

      The Class A  Certificates  will be treated as assets  described in Section
7701(a)(19)(C)  of the  Internal  Revenue Code and "real  estate  assets"  under
Section  856(c)(4)(A)  of the Internal  Revenue Code in the same proportion that
the assets of the trust fund would be so treated.  In addition,  interest on the
Class A  Certificates  will be treated as  "interest on  obligations  secured by
mortgages on real property" under Section  856(c)(3)(B) of the Internal  Revenue
Code to the extent that the Class A  Certificates  are  treated as "real  estate
assets" under Section 856(c)(4)(A) of the Internal Revenue Code.  Moreover,  the
Class A Certificates will be "qualified mortgages" within the meaning of Section
860G(a)(3) of the Internal  Revenue Code if  transferred to another REMIC on its
startup day in exchange  for a regular or residual  interest  therein.  However,
prospective  investors  in Class A  Certificates  that will be treated as assets
described in Section  860G(a)(3) of the Internal  Revenue Code should note that,
notwithstanding that treatment,  any repurchase of a certificate pursuant to the
right of the servicer or the  depositor to repurchase  the Class A  Certificates
may  adversely  affect  any REMIC  that  holds the Class A  Certificates  if the
repurchase is made under circumstances  giving rise to a Prohibited  Transaction
Tax. See "The Pooling and Servicing  Agreement--Termination"  in this prospectus
supplement and "Material

                                      S-76
<PAGE>


Federal   Income  Tax   Consequences--Taxation   of  Owners  of  REMIC  Residual
Certificates--Prohibited Transaction and Other Taxes" in the prospectus.

      For further  information  regarding  federal  income tax  consequences  of
investing  in the  Class  A  Certificates,  see  "Material  Federal  Income  Tax
Consequences--Taxation of Owners of REMIC and FASIT Regular Certificates" in the
prospectus.

                             METHOD OF DISTRIBUTION

      In accordance with the terms and conditions of an underwriting  agreement,
dated , will serve as  underwriter  and has agreed to purchase and the depositor
has agreed to sell the Class A Certificates.  The certificates being sold to the
underwriter  are referred to as the  underwritten  certificates.  It is expected
that delivery of the underwritten  certificates  will be made only in book-entry
form  through  the  Same  Day  Funds  Settlement  System  of  DTC  on  or  about
_____________, against payment therefor in immediately available funds.

      In connection  with the  underwritten  certificates,  the  underwriter has
agreed,  in  accordance  with  the  terms  and  conditions  of the  underwriting
agreement,  to  purchase  all of  the  underwritten  certificates  if any of its
underwritten certificates are purchased thereby.

      The   underwriting   agreement   provides  that  the  obligations  of  the
underwriter to pay for and accept delivery of the underwritten  certificates are
subject  to,  among  other  things,  the  receipt of legal  opinions  and to the
conditions, among others, that no stop order suspending the effectiveness of the
depositor's  registration  statement shall be in effect, and that no proceedings
for that purpose shall be pending before or threatened by the Commission.

      The distribution of the  underwritten  certificates by the underwriter may
be  effected  from  time  to time in one or  more  negotiated  transactions,  or
otherwise,  at varying prices to be determined at the time of sale.  Proceeds to
the depositor from the sale of the underwritten  certificates,  before deducting
expenses  payable by the  depositor,  will be  approximately  % of the aggregate
Certificate  Principal  Balance of the  underwritten  certificates  plus accrued
interest thereon from the cut-off date.

      The underwriter may effect these  transactions by selling the underwritten
certificates to or through dealers,  and those dealers may receive  compensation
in the form of  underwriting  discounts,  concessions  or  commissions  from the
underwriter  for whom  they act as  agent.  In  connection  with the sale of the
underwritten  certificates,  the  underwriter  may be  deemed  to have  received
compensation  from the depositor in the form of underwriting  compensation.  The
underwriter  and any  dealers  that  participate  with  the  underwriter  in the
distribution of the  underwritten  certificates may be deemed to be underwriters
and any profit on the resale of the underwritten certificates positioned by them
may be deemed to be underwriting  discounts and commissions under the Securities
Act of 1933, as amended.

      The underwriting  agreement provides that the depositor will indemnify the
underwriter, and that under limited circumstances the underwriter will indemnify
the depositor,  against some liabilities under the Securities Act, or contribute
to payments required to be made in respect thereof.

                                      S-77
<PAGE>

      There is currently no secondary  market for the Class A Certificates.  The
underwriter intends to make a secondary market in the underwritten  certificates
but is not obligated to do so. There can be no assurance that a secondary market
for the Class A Certificates  will develop or, if it does develop,  that it will
continue.  The  Class  A  Certificates  will  not be  listed  on any  securities
exchange.

      The primary  source of information  available to investors  concerning the
Class A Certificates will be the monthly statements  discussed in the prospectus
under "Description of the  Certificates--Reports  to Certificateholders,"  which
will include information as to the outstanding  principal balance of the Class A
Certificates.  There  can  be  no  assurance  that  any  additional  information
regarding the Class A Certificates  will be available  through any other source.
In  addition,  the  depositor  is not aware of any source  through  which  price
information  about the Class A  Certificates  will be  available  on an  ongoing
basis. The limited nature of this information regarding the Class A Certificates
may  adversely  affect  the  liquidity  of the Class A  Certificates,  even if a
secondary market for the Class A Certificates becomes available.

                                 LEGAL OPINIONS

     [Certain legal matters relating to the certificates will be passed upon for
the depositor by , and for the ------------------------ ------------------------
underwriter by , .] ---------------------- ------------------------

                                    [EXPERTS

      The  consolidated  financial  statements of [financial  guaranty  insurer]
____________ [and  subsidiaries],  as of December 31, ____ and ____ and for each
of the years in the three-year  period ended December 31, ____ are  incorporated
by reference in this prospectus supplement and in the registration  statement in
reliance upon the report of _________, independent certified public accountants,
incorporated by reference in this prospectus supplement,  and upon the authority
of __________ as experts in accounting and auditing.]

                                     RATINGS

     It is a condition of the issuance of the Class A Certificates  that they be
rated     "AAA"     by  __________   and   ____________.

[______________________ 's ratings on mortgage pass-through certificates address
the likelihood of the receipt by  certificateholders  of payments required under
the pooling and servicing agreement.  ____________________  's ratings take into
consideration  the credit  quality of the mortgage  pool,  structural  and legal
aspects  associated with the  certificates,  and the extent to which the payment
stream in the  mortgage  pool is adequate to make  payments  required  under the
certificates.  ________________ 's rating on the certificates does not, however,
constitute a statement regarding frequency of prepayments on the mortgage s. See
"Certain Yield and Prepayment  Considerations" in this prospectus supplement. In
addition,  the  ratings do not  address  the  likelihood  of the  receipt of any
amounts in respect of Prepayment Interest Shortfalls.

     The ratings assigned by to mortgage  pass-through  certificates address the
likelihood of the receipt by  certificateholders  of all  distributions to which
they are entitled under the transaction structure.  _________________'s  ratings
reflect its analysis of the


                                      S-78
<PAGE>


riskiness of the underlying  mortgage loans and the structure of the transaction
as described in the operative documents. 's ratings do not address the effect on
the  certificates'  yield  attributable  to  prepayments  or  recoveries  on the
underlying  mortgage  loans  . In  addition,  the  ratings  do not  address  the
likelihood  of the  receipt of any  amounts in  respect of  Prepayment  Interest
Shortfalls.

     The depositor has not requested a rating on the Class A Certificates by any
rating agency other than _______________ and __________________.  However, there
can be no assurance as to whether any other rating  agency will rate the Class A
Certificates,  or, if it does, what rating would be assigned by any other rating
agency.  A rating on the  Certificates by another rating agency,  if assigned at
all, may be lower than the ratings assigned to the Class A Certificates by and .

      A security rating is not a recommendation  to buy, sell or hold securities
and may be subject to revision or withdrawal at any time by the assigning rating
organization.  Each  security  rating should be evaluated  independently  of any
other security rating. In the event that the ratings  initially  assigned to the
Class A  Certificates  are  subsequently  lowered for any  reason,  no person or
entity is obligated to provide any additional support or credit enhancement with
respect to the Class A Certificates.

                                LEGAL INVESTMENT

      The Class A Certificates will not constitute "mortgage related securities"
for purposes of SMMEA because the mortgage pool includes mortgage loans that are
secured by subordinate liens on the related mortgage properties.

      One or more classes of the Class A Certificates  may be viewed as "complex
securities" under TB13a, which applies to thrift  institutions  regulated by the
OTS.

      The depositor makes no representations  as to the proper  characterization
of any class of the Class A Certificates for legal investment or other purposes,
or as to the ability of particular  investors to purchase any class of the Class
A  Certificates   under   applicable  legal   investment   restrictions.   These
uncertainties  may  adversely  affect  the  liquidity  of any  class  of Class A
Certificates. Accordingly, all investors whose investment activities are subject
to legal investment laws and  regulations,  regulatory  capital  requirements or
review by regulatory  authorities  should  consult with their legal  advisors in
determining  whether  and to what  extent any class of the Class A  Certificates
constitutes  a legal  investment or is subject to  investment,  capital or other
restrictions.

      See "Legal Investment" in the prospectus.

                              ERISA CONSIDERATIONS

      A fiduciary of any ERISA plan, any insurance company,  whether through its
general or separate  accounts,  or any other person investing ERISA plan assets,
as defined under "ERISA  Considerations"  in the  prospectus,  should  carefully
review  with its legal  advisors  whether  the  purchase  or  holding of Class A
Certificates  could  give  rise to a  transaction  prohibited  or not  otherwise
permissible  under  ERISA or Section  4975 of the  Internal  Revenue  Code.  The


                                      S-79
<PAGE>

purchase or holding of the Class A Certificates by or on behalf of an ERISA plan
or with ERISA  plan  assets  may  qualify  for  exemptive  relief  under the RFC
exemption, as described under "ERISA Considerations" in the prospectus. However,
the RFC  exemption  contains  a number of  conditions  which must be met for the
exemption to apply,  including  the  requirement  that any ERISA plan must be an
"accredited  investor"  as  defined in Rule  501(a)(1)  of  Regulation  D of the
Commission under the Securities Act.

      Insurance companies contemplating the investment of general account assets
in the Class A  Certificates  should  consult  with their  legal  advisors  with
respect to the  applicability  of Section  401(c) of ERISA,  as described  under
"ERISA  Considerations--Insurance  Company General  Accounts" in the prospectus.
The DOL issued final  regulations  under Section  401(c) on January 4, 2000, but
these final regulations are not generally applicable until July 5, 2001.

      Any  fiduciary  or other  investor of ERISA plan  assets that  proposes to
acquire  or hold the Class A  Certificates  on  behalf of an ERISA  plan or with
ERISA plan assets  should  consult with its counsel with respect to: (i) whether
the  specific  and  general  conditions  and the other  requirements  of the RFC
exemption  would be  satisfied,  or  whether  any other  prohibited  transaction
exemption  would  apply,  and (ii) the  potential  applicability  of the general
fiduciary  responsibility  provisions  of ERISA and the  prohibited  transaction
provisions  of  ERISA  and  Section  4975 of the  Internal  Revenue  Code to the
proposed investment. See "ERISA Considerations" in the prospectus.

      The sale of any of the  Class A  Certificates  to an  ERISA  plan is in no
respect  a  representation  by the  depositor  or the  underwriter  that such an
investment  meets all relevant  legal  requirements  relating to  investments by
ERISA plans  generally or any particular  ERISA plan, or that such an investment
is appropriate for ERISA plans generally or any particular ERISA plan.


                                      S-80
<PAGE>


               Credit Suisse First Boston Mortgage Securities Corp.

                         $



                   Mortgage-Backed Pass-Through Certificates,

                                 Series 200_-___

                              Prospectus supplement

                              [Name of Underwriter]

                                   Underwriter

You should rely only on the  information  contained or incorporated by reference
in this prospectus supplement and the prospectus.  We have not authorized anyone
to provide you with different information.

We are not offering the certificates offered hereby in any state where the offer
is not permitted.

Dealers will be required to deliver a prospectus  supplement and prospectus when
acting as  underwriters of the  certificates  offered hereby and with respect to
their unsold allotments or subscriptions.  In addition,  all dealers selling the
offered  certificates,  whether or not  participating  in this offering,  may be
required to deliver a prospectus supplement and prospectus until _______, .



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission