<PAGE>
EXHIBIT 99.1
5
<PAGE>
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Morgan Stanley DEAN WITTER [GRAPHIC OMITTED] July 10, 2000
Asset Finance Group
ABS/MBS Capital Markets
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Computational Materials
$284,485,000
Morgan Stanley ABS Capital I Series 2000-1
Mortgage Loan Asset-Backed Notes
Series 2000-1
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This information has been prepared in connection with the issuance of
securities by the above trust, and is based in part on information provided by
Long Beach Mortgage Company with respect to the characteristics of the pool of
home equity loans which backs the securities. The actual characteristics and
performance of the home equity loans will differ from the assumptions used in
preparing these materials, which are hypothetical in nature. Changes in the
assumptions may have a material impact on the information set forth in these
materials. No representation is made that any performance or return indicated
herein will be achieved. For example, it is very unlikely that the loans will
prepay at a constant rate or follow a predictable pattern. This information may
not be used or otherwise disseminated in connection with the offer or sale of
these or any other securities, except in connection with the initial offer or
sale of these securities to you to the extent set forth below. NO REPRESENTATION
IS MADE AS TO THE APPROPRIATENESS, USEFULNESS, ACCURACY OR COMPLETENESS OF THESE
MATERIALS OR THE ASSUMPTIONS ON WHICH THEY ARE BASED. Additional information is
available upon request. These materials do not constitute an offer to buy or
sell or a solicitation of an offer to buy or sell any security or instrument or
to participate in any particular trading strategy. ANY SUCH OFFER TO BUY OR SELL
ANY SECURITY WOULD BE MADE PURSUANT TO A DEFINITIVE PROSPECTUS AND PROSPECTUS
SUPPLEMENT PREPARED BY THE ISSUER WHICH WOULD CONTAIN MATERIAL INFORMATION NOT
CONTAINED IN THESE MATERIALS. SUCH PROSPECTUS AND PROSPECTUS SUPPLEMENT WILL
CONTAIN ALL MATERIAL INFORMATION IN RESPECT OF ANY SUCH SECURITY OFFERED THEREBY
AND ANY DECISION TO INVEST IN SUCH SECURITIES SHOULD BE MADE SOLELY IN RELIANCE
UPON SUCH PROSPECTUS AND PROSPECTUS SUPPLEMENT. ANY CAPITALIZED TERMS USED BUT
NOT DEFINED HEREIN ARE TO BE READ IN CONJUNCTION WITH SUCH PROSPECTUS AND
PROSPECTUS SUPPLEMENT. In the event of any such offering, these materials,
including any description of the loans contained herein, shall be deemed
superseded, amended and supplemented in their entirety by such Prospectus and
Prospectus Supplement. To Our Readers Worldwide: In addition, please note that
this information has been provided by Morgan Stanley & Co. Incorporated and
approved by Morgan Stanley & Co. International Limited, a member of the
Securities and Futures Authority, and Morgan Stanley Japan Ltd. We recommend
that investors obtain the advice of their Morgan Stanley & Co. International
Limited or Morgan Stanley Japan Ltd. representative about the investment
concerned. NOT FOR DISTRIBUTION TO PRIVATE CUSTOMERS AS DEFINED BY THE U.K.
SECURITIES AND FUTURES AUTHORITY.
<PAGE>
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Morgan Stanley DEAN WITTER [GRAPHIC OMITTED] July 10, 2000
Asset Finance Group
ABS/MBS Capital Markets
--------------------------------------------------------------------------------
$284,485,000 Morgan Stanley ABS Capital I Series 2000-1
Long Beach Mortgage Company -- Master Servicer
Transaction Highlights
<TABLE>
<CAPTION>
Expected Modified Payment
Ratings Avg Life Duration Window To
(S&P/ To Call / To Call / Call /
Class Description Moody's) Balance Mty(1)(2) Mty(1)(2) Mty(1)(2) Day Count Benchmark
============ =============== =============== =============== ============= ============== ============= ============= ==============
<S> <C> <C> <C> <C> <C> <C> <C> <C>
A ARM Floater AAA/Aaa $284,485,000 2.19/2.39 1.99/1.89 83/188 Actual/360 1 Month LIBOR
------------ --------------- --------------- --------------- -----------------------------------------------------------------------
M-1 ARM Floater AA/Aa2 $ 25,207,000
------------ --------------- --------------- ---------------
M-2 ARM Floater A/A2 $ 22,507,000 Not Offered
------------ --------------- --------------- ---------------
B ARM Floater BBB-/Baa3 $ 18,906,000
------------ --------------- --------------- --------------- -----------------------------------------------------------------------
</TABLE>
Notes: (1) Notes are priced to the 10% optional clean-up call.
(2) Based on the pricing prepayment speed. See details below.
Issuer: Morgan Stanley ABS Capital I Series 2000-1
Seller: Morgan Stanley Dean Witter Mortgage Capital Inc.
Master Servicer: Long Beach Mortgage Company
Trustee: Bankers Trust Company of California, N.A.
Manager: Morgan Stanley Dean Witter
Expected Pricing Date: July 14, 2000
Expected Settlement July 25, 2000 through DTC and Euroclear, Notes settle
Date: without accrued interest
--------------------------------------------------------------------------------
This information has been prepared in connection with the issuance of
securities by the above trust, and is based in part on information provided by
Long Beach Mortgage Company with respect to the characteristics of the pool of
home equity loans which backs the securities. The actual characteristics and
performance of the home equity loans will differ from the assumptions used in
preparing these materials, which are hypothetical in nature. Changes in the
assumptions may have a material impact on the information set forth in these
materials. No representation is made that any performance or return indicated
herein will be achieved. For example, it is very unlikely that the loans will
prepay at a constant rate or follow a predictable pattern. This information may
not be used or otherwise disseminated in connection with the offer or sale of
these or any other securities, except in connection with the initial offer or
sale of these securities to you to the extent set forth below. NO REPRESENTATION
IS MADE AS TO THE APPROPRIATENESS, USEFULNESS, ACCURACY OR COMPLETENESS OF THESE
MATERIALS OR THE ASSUMPTIONS ON WHICH THEY ARE BASED. Additional information is
available upon request. These materials do not constitute an offer to buy or
sell or a solicitation of an offer to buy or sell any security or instrument or
to participate in any particular trading strategy. ANY SUCH OFFER TO BUY OR SELL
ANY SECURITY WOULD BE MADE PURSUANT TO A DEFINITIVE PROSPECTUS AND PROSPECTUS
SUPPLEMENT PREPARED BY THE ISSUER WHICH WOULD CONTAIN MATERIAL INFORMATION NOT
CONTAINED IN THESE MATERIALS. SUCH PROSPECTUS AND PROSPECTUS SUPPLEMENT WILL
CONTAIN ALL MATERIAL INFORMATION IN RESPECT OF ANY SUCH SECURITY OFFERED THEREBY
AND ANY DECISION TO INVEST IN SUCH SECURITIES SHOULD BE MADE SOLELY IN RELIANCE
UPON SUCH PROSPECTUS AND PROSPECTUS SUPPLEMENT. ANY CAPITALIZED TERMS USED BUT
NOT DEFINED HEREIN ARE TO BE READ IN CONJUNCTION WITH SUCH PROSPECTUS AND
PROSPECTUS SUPPLEMENT. In the event of any such offering, these materials,
including any description of the loans contained herein, shall be deemed
superseded, amended and supplemented in their entirety by such Prospectus and
Prospectus Supplement. To Our Readers Worldwide: In addition, please note that
this information has been provided by Morgan Stanley & Co. Incorporated and
approved by Morgan Stanley & Co. International Limited, a member of the
Securities and Futures Authority, and Morgan Stanley Japan Ltd. We recommend
that investors obtain the advice of their Morgan Stanley & Co. International
Limited or Morgan Stanley Japan Ltd. representative about the investment
concerned. NOT FOR DISTRIBUTION TO PRIVATE CUSTOMERS AS DEFINED BY THE U.K.
SECURITIES AND FUTURES AUTHORITY.
<PAGE>
Transaction Highlights (cont'd)
Distribution Dates: The 25th of each month, or if such day is not a business
day, on the next business day, beginning August 25, 2000
Mortgage Loans: The Trust will consist of fixed and adjustable rate
sub-prime residential mortgage loans
Pricing Prepayment 28% CPR
Speed:
Credit Enhancement: The Class A Notes are credit enhanced by:
1) Excess spread from the mortgage loans,
2) 2.35% overcollateralization (funded upfront).
After the 36th month and subject to certain tests,
the overcollateralization will equal 4.70% of the
outstanding balance of the mortgage loans, subject
to a 50bps floor and certain delinquency triggers
(please see below),
3) As of the closing date, subordination (including
upfront overcollateralization) is equal to 20.0%
for the Class A Notes. For those notes not offered
herein, the subordination (including upfront
overcollateralization) is equal to 13% for M-1,
7.75% for M-2, and 2.35% for B.
Trigger Event: If the percentage of loans 60+ days delinquent exceeds
40% of the Senior Specified enhancement amount
(approximately 16%)
Optional Clean-up When the principal balance of the mortgage loans
Call: (aggregate of Fixed Rate Group and ARM Group) is less
than or equal to 10% of the aggregate original
certificate principal balance of the loans.
Step-up Coupons: The coupon on the Class A Notes will increase after the
clean-up call date should the call not be exercised.
Available Funds Caps: The Class A Notes will be subject to an available funds
cap. Supplemental interest will be payable on the Class A
Notes. The ratings do not address the likelihood of the
payment of supplemental interest.
Trust Tax Status: REMIC
ERISA Eligibility: The Class A Notes are ERISA eligible.
SMMEA Eligibility: The Class A notes are SMMEA eligible.
--------------------------------------------------------------------------------
This information has been prepared in connection with the issuance of
securities by the above trust, and is based in part on information provided by
Long Beach Mortgage Company with respect to the characteristics of the pool of
home equity loans which backs the securities. The actual characteristics and
performance of the home equity loans will differ from the assumptions used in
preparing these materials, which are hypothetical in nature. Changes in the
assumptions may have a material impact on the information set forth in these
materials. No representation is made that any performance or return indicated
herein will be achieved. For example, it is very unlikely that the loans will
prepay at a constant rate or follow a predictable pattern. This information may
not be used or otherwise disseminated in connection with the offer or sale of
these or any other securities, except in connection with the initial offer or
sale of these securities to you to the extent set forth below. NO REPRESENTATION
IS MADE AS TO THE APPROPRIATENESS, USEFULNESS, ACCURACY OR COMPLETENESS OF THESE
MATERIALS OR THE ASSUMPTIONS ON WHICH THEY ARE BASED. Additional information is
available upon request. These materials do not constitute an offer to buy or
sell or a solicitation of an offer to buy or sell any security or instrument or
to participate in any particular trading strategy. ANY SUCH OFFER TO BUY OR SELL
ANY SECURITY WOULD BE MADE PURSUANT TO A DEFINITIVE PROSPECTUS AND PROSPECTUS
SUPPLEMENT PREPARED BY THE ISSUER WHICH WOULD CONTAIN MATERIAL INFORMATION NOT
CONTAINED IN THESE MATERIALS. SUCH PROSPECTUS AND PROSPECTUS SUPPLEMENT WILL
CONTAIN ALL MATERIAL INFORMATION IN RESPECT OF ANY SUCH SECURITY OFFERED THEREBY
AND ANY DECISION TO INVEST IN SUCH SECURITIES SHOULD BE MADE SOLELY IN RELIANCE
UPON SUCH PROSPECTUS AND PROSPECTUS SUPPLEMENT. ANY CAPITALIZED TERMS USED BUT
NOT DEFINED HEREIN ARE TO BE READ IN CONJUNCTION WITH SUCH PROSPECTUS AND
PROSPECTUS SUPPLEMENT. In the event of any such offering, these materials,
including any description of the loans contained herein, shall be deemed
superseded, amended and supplemented in their entirety by such Prospectus and
Prospectus Supplement. To Our Readers Worldwide: In addition, please note that
this information has been provided by Morgan Stanley & Co. Incorporated and
approved by Morgan Stanley & Co. International Limited, a member of the
Securities and Futures Authority, and Morgan Stanley Japan Ltd. We recommend
that investors obtain the advice of their Morgan Stanley & Co. International
Limited or Morgan Stanley Japan Ltd. representative about the investment
concerned. NOT FOR DISTRIBUTION TO PRIVATE CUSTOMERS AS DEFINED BY THE U.K.
SECURITIES AND FUTURES AUTHORITY.
3
