ITEQ INC
SC 13D/A, 1999-05-07
INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFING EQUIP
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<PAGE>   1

                                 SCHEDULE 13D/A
                                 (RULE 13D-101)
  Information to be Included in Statements Filed Pursuant to Rule 13d-1(a) and
               Amendments Thereto Filed Pursuant to Rule 13d-2(a)

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                    Under the Securities Exchange Act of 1934

                               (Amendment No. 1 )*

                                   ITEQ, INC.
- --------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $.001 per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    450430103
- --------------------------------------------------------------------------------
                                 (CUSIP Number)

                                  Robert Alpert
                              The Alpert Companies
                               Three Allen Center
                              333 Clay, Suite 4150
                              Houston, Texas 77002
                                 (713) 336-4700

- --------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)

                                 April 27, 1999

- --------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)

      If the filing person has previously filed a statement on Schedule 13G to
report the acquisition which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(e), 13d-1(f), or 13d-1(g), check the
following box.[ ]

                    Note: Schedules filed in paper format shall include a signed
              original and five copies of the schedule, including all exhibits.
              See Rule 13d-7(b) for other parties to whom copies are to be sent.

      * The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

      The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).


<PAGE>   2


CUSIP No. 450430103                                                 Page 2 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S.   IDENTIFICATION NO.
          OF ABOVE PERSON

                           ROBERT ALPERT
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               PF

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]
                                                                             
- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION

           UNITED STATES
- --------------------------------------------------------------------------------

NUMBER OF      (7)   SOLE VOTING POWER
                       1,824,200
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       1,824,200
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE
- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON
             1,824,200
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            6.5%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **

            IN
- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>   3

CUSIP No. 450430103                                                 Page 3 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                  DANRO CORPORATION
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               WC

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION

            TEXAS
- --------------------------------------------------------------------------------

NUMBER OF      (7)   SOLE VOTING POWER
                       1,424,200
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       1,424,200
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE

- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON
             1,424,200
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            5.1%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            CO

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>   4

CUSIP No. 450430103                                                 Page 4 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                  WILDWOOD CAPITAL COMPANY
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               WC

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION
           TEXAS

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

NUMBER OF      (7)   SOLE VOTING POWER
                       110,000
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)  SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)  SOLE DISPOSITIVE POWER
                       110,000
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE

- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON
             110,000
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            0.4%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            PN

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>   5

CUSIP No. 450430103                                                 Page 5 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                  MARKUS VENTURES, L.P.
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY
 

- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               WC

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION
           TEXAS

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

NUMBER OF      (7)   SOLE VOTING POWER
                       242,500
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       242,500
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE
- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON
             242,500
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
           BY AMOUNT IN ROW (11)
             0.9%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            PN

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>   6

CUSIP No. 450430103                                                 Page 6 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                  MARKUS INVESTMENTS, INC.
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               WC

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION
            TEXAS

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

NUMBER OF      (7)   SOLE VOTING POWER
                       110,000
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       110,000
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE
- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON

             110,000
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            0.4%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            CO

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT


<PAGE>   7

CUSIP No. 450430103                                                 Page 7 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                  JAMES VENTURES, L.P.
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               WC

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION
            TEXAS

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

NUMBER OF      (7)   SOLE VOTING POWER
                       610,000
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       610,000
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE
- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON
             610,000
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            2.2%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            PN

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT


<PAGE>   8

CUSIP No. 450430103                                                 Page 8 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                 JAMES INVESTMENTS, INC.
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               WC

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION
            TEXAS

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

NUMBER OF      (7)   SOLE VOTING POWER
                       351,700
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       351,700
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE
- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
          BY EACH REPORTING PERSON
                  351,700
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            1.2%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            CO

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT


<PAGE>   9

CUSIP No. 450430103                                                 Page 9 of 12

- --------------------------------------------------------------------------------
     (1)  NAME OF REPORTING PERSON
          S.S. OR I.R.S. IDENTIFICATION NO.
          OF ABOVE PERSON

                  GLADYS ALPERT
- --------------------------------------------------------------------------------
     (2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP **
                                                                        (a)  [X]
                                                                        (b)  [ ]
- --------------------------------------------------------------------------------
     (3)  SEC USE ONLY


- --------------------------------------------------------------------------------
     (4)  SOURCE OF FUNDS
               PF

- --------------------------------------------------------------------------------
     (5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
          TO ITEM 2(d) OR 2(e)                                               [ ]

- --------------------------------------------------------------------------------
     (6)  CITIZENSHIP OR PLACE OF ORGANIZATION
           UNITED STATES

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

NUMBER OF      (7)   SOLE VOTING POWER
                       25,000
SHARES         -----------------------------------------------------------------

BENEFICIALLY   (8)   SHARED VOTING POWER
                       NONE
OWNED BY       -----------------------------------------------------------------

EACH           (9)   SOLE DISPOSITIVE POWER
                       25,000
REPORTING      -----------------------------------------------------------------

PERSON WITH    (10)  SHARED DISPOSITIVE POWER
                       NONE

- --------------------------------------------------------------------------------
     (11)  AGGREGATE AMOUNT BENEFICIALLY OWNED
           BY EACH REPORTING PERSON
             25,000
- --------------------------------------------------------------------------------
    (12)  CHECK BOX IF THE AGGREGATE AMOUNT
          IN ROW (11) EXCLUDES CERTAIN SHARES **                             [ ]

- --------------------------------------------------------------------------------
    (13)  PERCENT OF CLASS REPRESENTED
          BY AMOUNT IN ROW (11)
            0.1%
- --------------------------------------------------------------------------------
    (14)  TYPE OF REPORTING PERSON **
            IN

- --------------------------------------------------------------------------------
                    ** SEE INSTRUCTIONS BEFORE FILLING OUT!



<PAGE>   10

CUSIP No. 450430103                                                Page 10 of 12

ITEM 1.   SECURITY AND ISSUER.

This Schedule 13D/A relates to shares of Common Stock (the "Shares") of ITEQ,
Inc., formerly known as Air-Cure Technologies, Inc. (the "Company"). The address
of the Company is 2727 Allen Parkway, Suite 760, Houston, Texas 77019.

ITEM 2.   IDENTITY AND BACKGROUND.

         (a) This Schedule is filed on behalf of (i) Mr. Robert Alpert, (ii)
Danro Corporation, (iii) Wildwood Capital Company, (iv) Markus Ventures, L.P.,
(v) James Ventures, L.P., (vi) Markus Investments, Inc., (vii) James
Investments, Inc., and (viii) Mrs. Gladys Alpert.

                  Mr. Robert Alpert is the sole shareholder and President of 
                  Danro Corporation.

                  Danro Corporation is the Managing General Partner of (i)
                  Wildwood Capital Management, (ii) Markus Ventures, L.P., and
                  (iii) James Ventures, L.P.

                  Markus Ventures, L.P. is the sole shareholder of Markus 
                  Investments, Inc. Mr.Robert Alpert is the Chairman of 
                  Markus Investments, Inc.

                  James Ventures, L.P. is the sole shareholder of James 
                  Investments,  Inc. Mr. Robert Alpert is the Chairman of 
                  James Investments, Inc.

                  Mrs. Gladys Alpert is the mother of Robert Alpert.

                  The reporting entities and individuals (collectively, the
                  "Group") are making a joint filing pursuant to Rule 13d-1(f)
                  because, by reason of the relationship as described herein,
                  they may be deemed to be a "group" within the meaning of
                  Section 13(d)(3) with respect to acquiring, holding and
                  disposing of Shares.

         (b) The address of the principal place of business and principal office
of each person referred to in paragraph (a) is Three Allen Center, 333 Clay,
Suite 4150, Houston, Texas 77002.

         (c) The principal business of each of Wildwood Capital Company, Markus
Ventures, L.P., James Ventures, L.P., James Investments, Inc., and James
Investments, Inc. is that of a private investment fund, engaged in the purchase
and sale of securities for investment for its own account.

                  The principal occupation of Mr. Alpert is as President of 
                  Danro Corporation, Managing General Partner of affiliated 
                  partnerships.

                  The principal occupation of Mrs. Gladys Alpert is as an 
                  investor.

         (d) None of the persons referred to in paragraph (a) above has, during
the last five years, been convicted in a criminal proceeding (excluding traffic
violations or similar misdemeanors).

         (e) None of the persons referred to in paragraph (a) above has, during
the last five years, been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction and as a result of such proceeding
was or is subject to a judgment, decree or final order enjoining future
violations of, or prohibiting or mandating activities subject to, Federal or
State securities laws or finding any violation with respect to such laws.

         (f) Each individual referred to in paragraph (a) above is a citizen of 
the United States. Danro Corporation, Markus Investments, Inc. and James
Investments, Inc. are each a corporation formed under the laws of the State of
Texas. Wildwood Capital Company is a general partnership formed under the laws
of the State of Texas. Markus Ventures, L.P. and James Ventures, L.P. are
limited partnerships formed under the laws of the State of Texas.



<PAGE>   11

CUSIP No. 450430103                                                Page 11 of 12


ITEM 3.   SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

         The net investment cost (including commissions) is $719,855 for the
additional 410,000 Shares purchased by James Ventures, L.P., as detailed in Item
5 (c) below. These Shares were purchased with the investment capital of James
Ventures, L.P.

ITEM 4.   PURPOSE OF THE TRANSACTION.

         The Group has acquired additional Shares of the Company for investment
purposes only, in the ordinary course of business. In addition, in the ordinary
course of their business, the Group may acquire further Shares from time to time
and may attempt to sell all or a portion of its Shares from time to time in the
open market, in brokers' transactions, in transactions directly with market
makers, in privately negotiated transactions, or a combination of the foregoing.

         Other than as set forth above, none of the Reporting Persons has any
plans or proposals which relate to, or could result in, any of the matters
referred to in paragraphs (b) through (j), inclusive, of Item 4 of Schedule 13D.
Such entities and persons may, at any time and from time to time, review or
reconsider their position with respect to any of such matters, but have no
present intention of doing so.

ITEM 5.   INTEREST IN SECURITIES OF THE ISSUER.

         (a) The approximate aggregate percentage of Shares reported
beneficially owned by each person herein is based on 28,192,036 shares
outstanding as of March 17, 1999, as reflected in the Form 10K of the Company
for the period ending December 31, 1998.

As of the date hereof:

              (i) Danro owns directly no Shares. By reason of the provisions of
                  Rule 13d-3 of the Act, Danro may be deemed to own beneficially
                  1,424,200 Shares, including (a) the 110,000 Shares owned
                  directly by Wildwood Capital Company, (b) the 242,500 Shares
                  owned directly by Markus Ventures, L.P. and the 110,000 Shares
                  owned by Markus Investments, Inc., and (c) the 610,000 Shares
                  owned directly by James Ventures, L.P. and the 351,700 Shares
                  owned by James Investments, Inc., (constituting approximately
                  0.4%, 1.3% and 3.4% of the Shares outstanding, respectively).

             (ii) Mrs. Gladys Alpert owns directly 25,000 Shares, constituting
                  approximately 0.1% of the Shares outstanding.

            (iii) Mr. Alpert owns directly 400,000 Shares, constituting
                  approximately 1.4% of the Shares outstanding. Mr. Alpert, by
                  reason of Rule 13d-3 of the Act, may be deemed to beneficially
                  own the Shares owned by each of the entities in above.
                  Accordingly, Mr. Alpert beneficially owns 1,849,200 Shares,
                  representing approximately 6.6% of the shares outstanding.

         (b) Danro Corporation has the power to vote and dispose of the Shares
owned by (i) Wildwood Capital Company, (ii) Markus Ventures, L.P., and (iii)
James Ventures, L.P., which power may be exercised by the managing general
partner of each such Partnership. Mr. Alpert has voting and investment power
over Shares managed by Danro Corporation. Mr. Alpert has the sole voting and
dispositive powers over Shares owned directly.

         (c) The only transactions in the Shares, effected by the Group during
the past 60 days were the following purchases:

<TABLE>
<CAPTION>
                Group Member              Date           Number of Shares      Price per Share
               ---------------            ----           ----------------      ---------------
<S>                                      <C>                  <C>                  <C>   
             James Ventures, L.P.        04/27/99            110,000               $ 1.78
             James Ventures, L.P.        04/27/99            220,000               $ 1.65
             James Ventures, L.P.        04/28/99             80,000               $ 2.02
</TABLE>

All such transactions were effected through the NASDAQ National Market or in
brokers' transactions.

         (d) No person other than each respective record owner referred to
herein of Shares is known to have the right to receive or the power to direct
the receipt of dividends from or the proceeds of sale of such Shares.
<PAGE>   12

CUSIP No. 450430103                                                Page 12 of 12



ITEM 6.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH
           RESPECT TO SECURITIES OF THE ISSUER

         Other than the agreement described in Item 7 below, there are no
contracts, understandings or relationships (legal or otherwise) among the
persons named in Item 2 hereof and between such persons or any person with
respect to any securities of the Company, including but not limited to transfer
or voting of any of the Shares, finder's fees, joint ventures, loan or option
arrangements, puts or calls, guarantees of profits, division of profits or loss,
or the giving or withholding of proxies.

ITEM 7.   MATERIAL TO BE FILED AS EXHIBITS

         Exhibit 1, Joint Acquisition Statement, as required by Rule 13d-1(f)(1)
of the Securities Act of 1934, dated January 15, 1999, by and among Mr. Robert
Alpert, Danro Corporation, Wildwood Capital Company, Markus Ventures, L.P.,
James Ventures, L.P., Markus Investments, Inc., James Investments, Inc., and
Mrs. Gladys Alpert (Incorporated herein by reference to Schedule 13D, filed
January 15, 1999).

         After reasonable inquiry and to the best of their knowledge and belief,
the undersigned certify that the information set forth in this statement is
true, complete and correct.


                                  May 7, 1999

                                  DANRO CORPORATION


                                  By:      /s/ ROBERT ALPERT
                                     ------------------------------------------
                                           Robert Alpert, President



                                  WILDWOOD CAPITAL COMPANY
                                  MARKUS VENTURES, L.P.
                                  JAMES VENTURES, L.P.
                                  By: DANRO CORPORATION,
                                       as their Managing General Partner


                                  By:      /s/ ROBERT ALPERT
                                     ------------------------------------------
                                           Robert Alpert, President



                                  MARKUS INVESTMENTS, INC.
                                  JAMES INVESTMENTS, INC.


                                  By:      /s/ ROBERT ALPERT
                                     ------------------------------------------
                                           Robert Alpert, Chairman



                                  /s/ ROBERT ALPERT
                                  ---------------------------------------------
                                  Robert Alpert



                                  /s/ GLADYS ALPERT
                                  ---------------------------------------------
                                  Gladys Alpert



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