QUERYOBJECT SYSTEMS CORP
SC 13D/A, 1998-11-24
PREPACKAGED SOFTWARE
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

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

                                  SCHEDULE 13D
                                 (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)

                               (Amendment No. 4)(1)

                         QUERYOBJECT SYSTEMS CORPORATION
- --------------------------------------------------------------------------------
                                (Name of issuer)

                                  COMMON STOCK
- --------------------------------------------------------------------------------
                         (Title of class of securities)


                                  227698 10 7
- --------------------------------------------------------------------------------
                                 (CUSIP number)

                              STEVEN WOLOSKY, ESQ.
                     OLSHAN GRUNDMAN FROME & ROSENZWEIG LLP
                                 505 Park Avenue
                            New York, New York 10022
                                 (212) 753-7200
- --------------------------------------------------------------------------------
                  (Name, address and telephone number of person
                authorized to receive notices and communications)

                                November 12, 1998
- --------------------------------------------------------------------------------
             (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  that 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.  The  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.

                         (Continued on following pages)

                               (Page 1 of 31 Pages)

- --------
     (1)          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 disclosures provided in a prior cover page.

                  The  information  required on 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 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>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 2 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                  Wheatley Partners, L.P.
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      Delaware
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             1,896,759(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         156,835(2) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         1,896,759(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         156,835(2) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,053,594(1)(2) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      30.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      PN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes (i) 557,879  shares of Common Stock  issuable upon exercise of
         warrants  and  (ii)  883,200  shares  of  Common  Stock  issuable  upon
         conversion  of shares  of Series A  Preferred  Stock  held by  Wheatley
         Partners, L.P.
(2)      Includes (i) 48,371  shares of Common Stock  issuable  upon exercise of
         warrants  and  (ii)  76,800  shares  of  Common  Stock   issuable  upon
         conversion  of shares  of Series A  Preferred  Stock  held by  Wheatley
         Foreign  Partners,  L.P., of which Wheatley  Partners,  L.P.  disclaims
         beneficial ownership.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 3 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                  Barry Rubenstein
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     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
   SHARES
BENEFICIALLY                             186,250(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         2,697,906(2) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         186,250(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         2,697,906(2) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,884,156(1)(2) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      39.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      IN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Consists of (i) 56,250 shares of Common Stock issuable upon exercise of
         options,  (ii) 50,000 shares of Common Stock  issuable upon exercise of
         warrants  and  (iii)  80,000  shares  of  Common  Stock  issuable  upon
         conversion  of  shares  of  Series  A  Preferred   Stock  held  by  Mr.
         Rubenstein.

(2)      Includes  (a) 3,125 shares of Common Stock  issuable  upon  exercise of
         warrants  held by Woodland  Partners,  (b)(i)  38,125  shares of Common
         Stock issuable upon exercise of warrants,  (ii) 40,000 shares of Common
         Stock issuable upon

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 4 of 31 Pages
- ------------------------------                     -----------------------------


         conversion  of  shares  of Series A  Preferred  Stock and (iii)  16,000
         shares of Common Stock  issuable upon  conversion of shares of Series B
         Preferred Stock, all of which is held by Woodland Venture Fund,  (c)(i)
         38,125 shares of Common Stock issuable upon exercise of warrants,  (ii)
         40,000  shares of Common Stock  issuable  upon  conversion of shares of
         Series A  Preferred  Stock and  (iii)  16,000  shares  of Common  Stock
         issuable upon conversion of shares of Series B Preferred  Stock, all of
         which is held by Seneca Ventures, (d)(i) 557,879 shares of Common Stock
         issuable  upon  exercise of warrants and (ii) 883,200  shares of Common
         Stock issuable upon  conversion of shares of Series A Preferred  Stock,
         all of which is held by Wheatley  Partners,  L.P., (e)(i) 48,371 shares
         of Common  Stock  issuable  upon  exercise of warrants  and (ii) 76,800
         shares of Common Stock  issuable upon  conversion of shares of Series A
         Preferred  Stock,  all of which is held by Wheatley  Foreign  Partners,
         L.P.,  and (f) 200,000 shares of Common Stock issuable upon exercise of
         options held by Rev-Wood Merchant  Partners.  Mr. Rubenstein  disclaims
         beneficial  ownership  of the  securities  held by  Woodland  Partners,
         Woodland  Venture  Fund,  Seneca  Ventures,  Wheatley  Partners,  L.P.,
         Wheatley Foreign Partners, L.P. and Rev- Wood Merchant Partners, except
         to the extent of his respective equity interest therein.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 5 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                        Irwin Lieber
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     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
   SHARES
BENEFICIALLY                             56,250(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         2,053,594(2) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         56,250(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         2,053,594(2) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,109,844(1)(2) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      31.3%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      IN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
(1)      Consists of 56,250  shares of Common Stock  issuable  upon  exercise of
         options held by Mr. Lieber.

(2)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley  Partners,  L.P.,  and (b)(i) 48,371 shares of Common Stock
         issuable  upon  exercise of warrants  and (ii) 76,800  shares of Common
         Stock issuable upon  conversion of shares of Series A Preferred  Stock,
         all of which is held by

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 6 of 31 Pages
- ------------------------------                     -----------------------------


         Wheatley  Foreign  Partners,   L.P.,  of  which  Mr.  Lieber  disclaims
         beneficial  ownership,  except to the extent of his  respective  equity
         interest therein.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 7 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                      Barry Fingerhut
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     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
   SHARES
BENEFICIALLY                             0 shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         2,053,594(1) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         0 shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         2,053,594(1) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,053,594(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      30.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      IN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
(1)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley  Partners,  L.P.,  and (b)(i) 48,371 shares of Common Stock
         issuable  upon  exercise of warrants  and (ii) 76,800  shares of Common
         Stock issuable upon  conversion of shares of Series A Preferred  Stock,
         all of which is held by Wheatley Foreign  Partners,  L.P., of which Mr.
         Fingerhut disclaims beneficial  ownership,  except to the extent of his
         respective equity interest therein.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 8 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                   Wheatley Partners, LLC
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      Delaware
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             0 shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         2,053,594(1) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         0 shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         2,053,594(1) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,053,594(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      30.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      OO
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
(1)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley  Partners,  L.P.,  and (b)(i) 48,371 shares of Common Stock
         issuable  upon  exercise of warrants  and (ii) 76,800  shares of Common
         Stock issuable upon  conversion of shares of Series A Preferred  Stock,
         all of which  is held by  Wheatley  Foreign  Partners,  L.P.,  of which
         Wheatley Partners,  LLC disclaims beneficial  ownership,  except to the
         extent of its respective equity interest therein.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 7 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                        Seth Lieber
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     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
   SHARES
BENEFICIALLY                             2,084(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         2,053,594(2) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         2,084(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         2,053,594(2) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,055,678(1)(2) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      30.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      IN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Consists of 2,084  shares of Common  Stock  issuable  upon  exercise of
         options held by Mr. Lieber.
(2)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley  Partners,  L.P.,  and (b)(i) 48,371 shares of Common Stock
         issuable  upon  exercise of warrants  and (ii) 76,800  shares of Common
         Stock issuable upon  conversion of shares of Series A Preferred  Stock,
         all of which is held by

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 10 of 31 Pages
- ------------------------------                     -----------------------------


         Wheatley  Foreign  Partners,   L.P.,  of  which  Mr.  Lieber  disclaims
         beneficial  ownership,  except to the extent of his  respective  equity
         interest therein.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 11 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                      Jonathan Lieber
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     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
   SHARES
BENEFICIALLY                             2,084(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         2,053,594(2) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         2,084(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         2,053,594(2) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,055,678(1)(2) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      30.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      IN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Consists of 2,084  shares of Common  Stock  issuable  upon  exercise of
         options held by Mr. Lieber.
(2)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley  Partners,  L.P.,  and (b)(i) 48,371 shares of Common Stock
         issuable  upon  exercise of warrants  and (ii) 76,800  shares of Common
         Stock issuable upon  conversion of shares of Series A Preferred  Stock,
         all of which is held by

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 12 of 31 Pages
- ------------------------------                     -----------------------------


         Wheatley  Foreign  Partners,   L.P.,  of  which  Mr.  Lieber  disclaims
         beneficial  ownership,  except to the extent of his  respective  equity
         interest therein.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 13 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                  Wheatley Management Ltd.
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      Cayman Islands, B.W.I.
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             0 shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         156,835(1) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         0 shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         156,835(1) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      156,835(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      3.0%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      OO
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes (i) 48,371  shares of Common Stock  issuable  upon exercise of
         warrants  and  (ii)  76,800  shares  of  Common  Stock   issuable  upon
         conversion  of shares  of Series A  Preferred  Stock  held by  Wheatley
         Foreign  Partners,  L.P., of which Wheatley  Management Ltd.  disclaims
         beneficial  ownership,  except  to the  extent of its  equity  interest
         therein.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 14 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                              Wheatley Foreign Partners, L.P.
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      Delaware
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             156,835(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         1,896,759(2) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         156,835(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         1,896,759(2) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      2,053,594(1)(2) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      30.7%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      PN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes (i) 48,371  shares of Common Stock  issuable  upon exercise of
         warrants  and  (ii)  76,800  shares  of  Common  Stock   issuable  upon
         conversion  of shares  of Series A  Preferred  Stock  held by  Wheatley
         Foreign Partners, L.P.
(2)      Includes (i) 557,879  shares of Common Stock  issuable upon exercise of
         warrants  and  (ii)  883,200  shares  of  Common  Stock  issuable  upon
         conversion  of shares of Series A  Preferred  Stock is held by Wheatley
         Partners,  L.P., of which Wheatley  Foreign  Partners,  L.P.  disclaims
         beneficial ownership.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 15 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                       Seneca Ventures
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      New York
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             134,606(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         0 shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         134,606(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         0 shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      134,606(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      2.6%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      PN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes (i) 38,125  shares of Common Stock  issuable  upon exercise of
         warrants,  (ii) 40,000 shares of Common Stock issuable upon  conversion
         of shares of Series A Preferred Stock and (iii) 16,000 shares of Common
         Stock  issuable upon  conversion of shares of Series B Preferred  Stock
         held by Seneca Ventures.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 16 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                       Woodland Venture Fund
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      New York
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             148,100(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         0 shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         148,100(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         0 shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      148,100(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      2.8%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      PN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes (i) 38,125  shares of Common Stock  issuable  upon exercise of
         warrants,  (ii) 40,000 shares of Common Stock issuable upon  conversion
         of shares of Series A Preferred Stock and (iii) 16,000 shares of Common
         Stock  issuable upon  conversion of shares of Series B Preferred  Stock
         held by Woodland Venture Fund.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 17 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                      Woodland Partners
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      New York
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             161,606(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         0 shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         161,606(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         0 shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      161,606(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      3.2%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      PN
================================================================================

                  *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes  3,125  shares of  Common  Stock  issuable  upon  exercise  of
         warrants held by Woodland Partners.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 18 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                 Rev-Wood Merchant Partners
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      New York
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             200,000(1) shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         0
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         200,000(1) shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         0
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      200,000(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      3.8%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      PN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Consists of 200,000  shares of Common Stock  issuable  upon exercise of
         options held by Rev-Wood Merchant Partners.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 19 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                     Marilyn Rubenstein
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      OO
- --------------------------------------------------------------------------------
     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
   SHARES
BENEFICIALLY                             0 shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         444,312(1) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         0 shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         444,312(1) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      444,312(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      8.4%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      IN
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes  (a) 3,125 shares of Common Stock  issuable  upon  exercise of
         warrants  held by Woodland  Partners,  (b)(i)  38,125  shares of Common
         Stock issuable upon exercise of warrants,  (ii) 40,000 shares of Common
         Stock  issuable upon  conversion of shares of Series A Preferred  Stock
         and (iii) 16,000  shares of Common Stock  issuable  upon  conversion of
         shares of Series B  Preferred  Stock,  all of which is held by Woodland
         Venture Fund,  and (c)(i)  38,125 shares of Common Stock  issuable upon
         exercise of warrants,  (ii) 40,000 shares of Common Stock issuable upon
         conversion of shares of Series A Preferred Stock and

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 20 of 31 Pages
- ------------------------------                     -----------------------------


         (iii) 16,000 shares of Common Stock issuable upon  conversion of shares
         of Series B Preferred  Stock,  all of which is held by Seneca Ventures.
         Mrs. Rubenstein  disclaims  beneficial ownership of the securities held
         by Woodland Partners, Woodland Venture Fund and Seneca Ventures, except
         to the  extent of her  respective  equity  interest  therein.  Does not
         include  securities  held by Barry  Rubenstein,  the husband of Marilyn
         Rubenstein.


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 21 of 31 Pages
- ------------------------------                     -----------------------------


================================================================================
     1          NAME OF REPORTING PERSONS
                I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

                                     Woodland Services Corp.
- --------------------------------------------------------------------------------
     2          CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*        (a) / /
                                                                         (b) / /
- --------------------------------------------------------------------------------
     3          SEC USE ONLY

- --------------------------------------------------------------------------------
     4          SOURCE OF FUNDS*
                      WC, OO
- --------------------------------------------------------------------------------
     5          CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
                PURSUANT TO ITEM 2(d) OR 2(e)                                / /
- --------------------------------------------------------------------------------
     6          CITIZENSHIP OR PLACE OF ORGANIZATION

                      New York
- --------------------------------------------------------------------------------
 NUMBER OF              7          SOLE VOTING POWER
   SHARES
BENEFICIALLY                             0 shares
  OWNED BY
    EACH
 REPORTING
PERSON WITH
                ----------------------------------------------------------------
                        8          SHARED VOTING POWER

                                         282,706(1) shares
                ----------------------------------------------------------------
                        9          SOLE DISPOSITIVE POWER

                                         0 shares
                ----------------------------------------------------------------
                       10          SHARED DISPOSITIVE POWER

                                         282,706(1) shares
- --------------------------------------------------------------------------------
     11         AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
                PERSON

                      282,706(1) shares
- --------------------------------------------------------------------------------
     12         CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
                CERTAIN SHARES*                                              / /
- --------------------------------------------------------------------------------
     13         PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                      5.3%
- --------------------------------------------------------------------------------
     14         TYPE OF REPORTING PERSON*

                      CO
================================================================================

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!

(1)      Includes (a)(i) 38,125 shares of Common Stock issuable upon exercise of
         warrants,  (ii) 40,000 shares of Common Stock issuable upon  conversion
         of shares of Series A Preferred Stock and (iii) 16,000 shares of Common
         Stock issuable upon  conversion of shares of Series B Preferred  Stock,
         all of which is held by Woodland  Venture Fund and (b)(i) 38,125 shares
         of Common Stock issuable upon exercise of warrants,  (ii) 40,000 shares
         of  Common  Stock  issuable  upon  conversion  of  shares  of  Series A
         Preferred  Stock and (iii) 16,000 shares of Common Stock  issuable upon
         conversion of shares of Series B

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 22 of 31 Pages
- ------------------------------                     -----------------------------


         Preferred  Stock,  all of which is held by  Seneca  Ventures,  of which
         Woodland Services Corp. disclaims beneficial  ownership,  except to the
         extent of its respective equity ownership therein.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 23 of 31 Pages
- ------------------------------                     -----------------------------


                  The following  constitutes Amendment No. 4 to the Schedule 13D
filed by the undersigned (the "Schedule 13D"). Except as specifically amended by
this Amendment No. 4, the Schedule 13D remains in full force and effect.

                  Item 3 is amended to include the following:

Item 3.  Source and Amount of Funds or Other Consideration.
         --------------------------------------------------

                  On November 2, 1998,  Seneca and Woodland  Fund  acquired in a
private  placement  transaction  (i)  shares of Series B  Convertible  Preferred
Stock,  $.001 par  value  per  share  ("Series  B  Preferred  Stock"),  that are
immediately   convertible  into  16,000  and  16,000  shares  of  Common  Stock,
respectively,  and (ii)  warrants  to purchase  shares of Common  Stock that are
immediately   exercisable   for  10,000  and  10,000  shares  of  Common  Stock,
respectively.  The  purchase  price of the  securities  was $8,000  and  $8,000,
respectively.  Seneca and Woodland Fund purchased  these  securities  with their
respective working capital and other funds.

                  On November 12, 1998,  Barry  Rubenstein,  Wheatley,  Wheatley
Foreign,  Seneca and Woodland Fund  acquired in the second  tranche of a private
placement  transaction (i) shares of Series A Convertible Preferred Stock, $.001
par  value  per  share  ("Series  A  Preferred  Stock"),  that  are  immediately
convertible  into 40,000,  441,600,  38,400,  20,000 and 20,000 shares of Common
Stock,  respectively,  and (ii) warrants to purchase shares of Common Stock that
are  immediately  exercisable  for 25,000,  276,000,  24,000,  12,500 and 12,500
shares of Common Stock, respectively. The purchase price of these securities was
$20,000, $220,800,  $19,200, $10,000 and $10,000,  respectively.  Mr. Rubenstein
purchased  these  securities  with his personal and other funds,  and  Wheatley,
Wheatley Foreign,  Seneca and Woodland Fund acquired these securities with their
respective working capital and other funds.

                  Item 5(a) and (b) are hereby amended to read in their entirety
as follows:

Item 5.  Interest in Securities of the Issuer.
         -------------------------------------

                  (a) The following  table sets forth the  aggregate  number and
percentage  (based on 5,121,422 shares of Common Stock outstanding as of October
31,  1998,  as  reported  by the  Issuer  in its Form 10Q for the  period  ended
September 30, 1998) of Common Stock  beneficially owned by each Reporting Person
named in Item 2 of Schedule 13D.


                                                                Percentage of
                                      Shares of Common         Shares of Common
                                            Stock                   Stock
Name                                 Beneficially Owned       Beneficially Owned
- ----                                 ------------------       ------------------

Wheatley Partners, L.P.(1)               2,053,594                 30.7%

Barry Rubenstein(2)                      2,884,156                 39.7%

Irwin Lieber(3)                          2,109,844                 31.3%

Barry Fingerhut(4)                       2,053,594                 30.7%

Wheatley Partners, LLC(4)                2,053,594                 30.7%

Seth Lieber(4)(5)                        2,055,678                 30.7%

Jonathan Lieber(4)(5)                    2,055,678                 30.7%

Wheatley Management Ltd.(6)                156,835                  3.0%

Wheatley Foreign Partners, L.P.(7)       2,053,594                 30.7%

Seneca Ventures(8)                         134,606                  2.6%


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 24 of 31 Pages
- ------------------------------                     -----------------------------

                                                                Percentage of
                                      Shares of Common         Shares of Common
                                            Stock                   Stock
Name                                 Beneficially Owned       Beneficially Owned
- ----                                 ------------------       ------------------

Woodland Venture Fund(9)                   148,100                  2.8%

Woodland Partners(10)                      161,606                  3.2%

Rev-Wood Merchant Partners(11)             200,000                  3.8%

Marilyn Rubenstein(12)                     444,312                  8.4%

Woodland Services Corp.(13)                282,706                  5.3%

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

(1)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley,  and (b)(i)  48,371  shares of Common Stock  issuable upon
         exercise of warrants and (ii) 76,800  shares of Common  Stock  issuable
         upon conversion of shares of Series A Preferred  Stock, all of which is
         held by Wheatley Foreign.  Wheatley disclaims  beneficial  ownership of
         the securities held by Wheatley Foreign.

(2)      Includes (i) 56,250  shares of Common Stock  issuable  upon exercise of
         options,  (ii) 50,000 shares of Common Stock  issuable upon exercise of
         warrants  and  (iii)  80,000  shares  of  Common  Stock  issuable  upon
         conversion  of  shares  of  Series  A  Preferred   Stock  held  by  Mr.
         Rubenstein.  Also  includes (a) 3,125  shares of Common Stock  issuable
         upon  exercise of warrants  held by Woodland  Partners,  (b)(i)  38,125
         shares of Common Stock issuable upon exercise of warrants,  (ii) 40,000
         shares of Common Stock  issuable upon  conversion of shares of Series A
         Preferred  Stock and (iii) 16,000 shares of Common Stock  issuable upon
         conversion of shares of Series B Preferred  Stock, all of which is held
         by Woodland  Fund,  (c)(i) 38,125 shares of Common Stock  issuable upon
         exercise of warrants,  (ii) 40,000 shares of Common Stock issuable upon
         conversion  of  shares  of Series A  Preferred  Stock and (iii)  16,000
         shares of Common Stock  issuable upon  conversion of shares of Series B
         Preferred Stock, all of which is held by Seneca,  (d)(i) 557,879 shares
         of Common  Stock  issuable  upon  exercise of warrants and (ii) 883,200
         shares of Common Stock  issuable upon  conversion of shares of Series A
         Preferred Stock, all of which is held by Wheatley, (e)(i) 48,371 shares
         of Common  Stock  issuable  upon  exercise of warrants  and (ii) 76,800
         shares of Common Stock  issuable upon  conversion of shares of Series A
         Preferred  Stock,  all of which is held by  Wheatley  Foreign,  and (f)
         200,000  shares of Common Stock  issuable upon exercise of options held
         by  Rev-Wood.  Mr.  Rubenstein  disclaims  beneficial  ownership of the
         securities held by Woodland Partners,  Woodland Fund, Seneca, Wheatley,
         Wheatley  Foreign and Rev-Wood,  except to the extent of his respective
         equity interest therein.

(3)      Includes  56,250  shares of Common  Stock  issuable  upon  exercise  of
         options held by Mr.  Lieber.  Also includes  (a)(i)  557,879  shares of
         Common Stock issuable upon exercise of warrants and (ii) 883,200 shares
         of  Common  Stock  issuable  upon  conversion  of  shares  of  Series A
         Preferred  Stock,  all of which is held by Wheatley,  and (b)(i) 48,371
         shares of Common  Stock  issuable  upon  exercise of warrants  and (ii)
         76,800  shares of Common Stock  issuable  upon  conversion of shares of
         Series A Preferred Stock, all of which is held by Wheatley Foreign,  of
         which Mr. Lieber disclaims beneficial  ownership,  except to the extent
         of his respective equity interest therein.

(4)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley, and


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 25 of 31 Pages
- ------------------------------                     -----------------------------


         (b)(i) 48,371 shares of Common Stock issuable upon exercise of warrants
         and (ii) 76,800  shares of Common Stock  issuable  upon  conversion  of
         shares of Series A  Preferred  Stock,  all of which is held by Wheatley
         Foreign.  The Reporting Person disclaims  beneficial ownership of these
         securities  except  to the  extent  of his  or  its  equity  respective
         ownership in Wheatley and/or Wheatley Foreign.

(5)      Includes 2,084 shares of Common Stock issuable upon exercise of options
         held by Mr. Lieber.

(6)      Includes (i) 48,371  shares of Common Stock  issuable  upon exercise of
         warrants  and  (ii)  76,800  shares  of  Common  Stock   issuable  upon
         conversion  of shares  of Series A  Preferred  Stock  held by  Wheatley
         Foreign, of which Wheatley Management disclaims  beneficial  ownership,
         except to the extent of its equity interest therein.

(7)      Includes  (a)(i)  557,879 shares of Common Stock issuable upon exercise
         of warrants  and (ii)  883,200  shares of Common  Stock  issuable  upon
         conversion of shares of Series A Preferred  Stock, all of which is held
         by Wheatley,  and (b)(i)  48,371  shares of Common Stock  issuable upon
         exercise of warrants and (ii) 76,800  shares of Common  Stock  issuable
         upon conversion of shares of Series A Preferred  Stock, all of which is
         held  by  Wheatley  Foreign.   Wheatley  Foreign  disclaims  beneficial
         ownership of the securities held by Wheatley.

(8)      Includes (i) 38,125  shares of Common Stock  issuable  upon exercise of
         warrants,  (ii) 40,000 shares of Common Stock issuable upon  conversion
         of shares of Series A Preferred Stock and (iii) 16,000 shares of Common
         Stock issuable upon  conversion of shares of Series B Preferred  Stock,
         held by Seneca.

(9)      Includes (i) 38,125  shares of Common Stock  issuable  upon exercise of
         warrants,  (ii) 40,000 shares of Common Stock issuable upon  conversion
         of shares of Series A Preferred Stock and (iii) 16,000 shares of Common
         Stock issuable upon  conversion of shares of Series B Preferred  Stock,
         held by Woodland Fund.

(10)     Includes  3,125  shares of  Common  Stock  issuable  upon  exercise  of
         warrants held by Woodland Partners.

(11)     Consists of 200,000  shares of Common Stock  issuable  upon exercise of
         options held by Rev-Wood.

(12)     Includes  (a) 3,125 shares of Common Stock  issuable  upon  exercise of
         warrants  held by Woodland  Partners,  (b)(i)  38,125  shares of Common
         Stock issuable upon exercise of warrants,  (ii) 40,000 shares of Common
         Stock  issuable upon  conversion of shares of Series A Preferred  Stock
         and (iii) 16,000  shares of Common Stock  issuable  upon  conversion of
         shares of Series B  Preferred  Stock,  all of which is held by Woodland
         Fund,  and (c)(i) 38,125 shares of Common Stock  issuable upon exercise
         of  warrants,   (ii)  40,000  shares  of  Common  Stock  issuable  upon
         conversion  of  shares  of Series A  Preferred  Stock and (iii)  16,000
         shares of Common Stock  issuable upon  conversion of shares of Series B
         Preferred  Stock,  all of  which  is held by  Seneca.  Mrs.  Rubenstein
         disclaims  beneficial  ownership  of the  securities  held by  Woodland
         Partners,  Woodland  Fund  and  Seneca,  except  to the  extent  of her
         respective equity interest therein. Does not include securities held by
         Barry Rubenstein, the husband of Marilyn Rubenstein.

(13)     Includes (a)(i) 38,125 shares of Common Stock issuable upon exercise of
         warrants,  (ii) 40,000 shares of Common Stock issuable upon  conversion
         of shares of Series A Preferred Stock and (iii) 16,000 shares of Common
         Stock issuable upon  conversion of shares of Series B Preferred  Stock,
         all of which is held by  Woodland  Fund,  and (b)(i)  38,125  shares of
         Common Stock issuable upon exercise of warrants,  (ii) 40,000 shares of
         Common Stock issuable upon

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 26 of 31 Pages
- ------------------------------                     -----------------------------


         conversion  of  shares  of Series A  Preferred  Stock and (iii)  16,000
         shares of Common Stock  issuable upon  conversion of shares of Series B
         Preferred  Stock,  all of which is held by  Seneca,  of which  Woodland
         Services Corp. disclaims beneficial ownership,  except to the extent of
         its respective equity ownership therein.

                  (b)  Wheatley  has sole power to vote and dispose of 1,896,759
shares of Common  Stock,  representing  approximately  28.9% of the  outstanding
shares of  Common  Stock  and may be  deemed  to have  shared  power to vote and
dispose of 156,835 shares of Common Stock,  representing  approximately  3.0% of
the outstanding shares of Common Stock.

                  By virtue of being  the  general  partner  of  Wheatley  and a
general partner of Wheatley  Foreign,  Wheatley LLC may be deemed to have shared
power to vote and  dispose of  2,053,594  shares of Common  Stock,  representing
approximately 30.7% of the outstanding shares of Common Stock.

                  Seth Lieber and  Jonathan  Lieber each have sole power to vote
and dispose of 2,084 shares of Common  Stock upon the exercise of options,  each
representing  less than 1% of the outstanding  shares of Common Stock. By virtue
of being a member  and an  officer  of  Wheatley  LLC,  each of Seth  Lieber and
Jonathan  Lieber  may be  deemed to have  shared  power to vote and  dispose  of
2,053,594  shares  of  Common  Stock,  representing  approximately  30.7% of the
outstanding shares of Common Stock.

                  Barry Rubenstein has sole power to vote and dispose of 186,250
shares of Common Stock upon the exercise of options and  warrants,  representing
approximately 3.5% of the outstanding shares of Common Stock. By virtue of being
a member  and an  officer  of  Wheatley  LLC and a general  partner  of  Seneca,
Woodland Partners,  Woodland Fund and Rev-Wood,  Mr. Rubenstein may be deemed to
have  shared  power to vote and  dispose of  2,697,906  shares of Common  Stock,
representing approximately 38.1% of the outstanding shares of Common Stock.

                  Irwin  Lieber  has sole  power to vote and  dispose  of 56,250
shares of Common Stock upon the exercise of options,  representing approximately
1.1% of the outstanding  shares of Common Stock. By virtue of being a member and
an officer of Wheatley  LLC,  Irwin Lieber may be deemed to have shared power to
vote and dispose of 2,053,594 shares of Common Stock, representing approximately
30.7% of the outstanding shares of Common Stock.

                  By virtue of being a member and an officer  of  Wheatley  LLC,
Barry  Fingerhut  may be  deemed to have  shared  power to vote and  dispose  of
2,053,594  shares  of  Common  Stock,  representing  approximately  30.7% of the
outstanding shares of Common Stock.

                  Wheatley Foreign has sole power to vote and dispose of 156,835
shares of Common Stock representing approximately 3.0% of the outstanding shares
of Common  Stock and may be deemed to have  shared  power to vote and dispose of
1,896,759  shares  of  Common  Stock,  representing  approximately  28.9% of the
outstanding shares of Common Stock.

                  By virtue  of being a general  partner  of  Wheatley  Foreign,
Wheatley  Management  may be deemed to have shared  power to vote and dispose of
156,835  shares  of  Common  Stock,  representing   approximately  3.0%  of  the
outstanding shares of Common Stock.

                  Seneca has sole power to vote and dispose of 134,606 shares of
Common Stock representing approximately 2.6% of the outstanding shares of Common
Stock.

                  Woodland  Fund has sole  power to vote and  dispose of 148,100
shares of Common Stock representing approximately 2.8% of the outstanding shares
of Common Stock.

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 27 of 31 Pages
- ------------------------------                     -----------------------------


                  Woodland  Partners  has  sole  power to vote  and  dispose  of
161,606 shares of Common Stock  representing  3.2% of the outstanding  shares of
Common Stock.

                  Rev-Wood has sole power to vote and dispose of 200,000  shares
of Common Stock representing 3.8% of the outstanding shares of Common Stock.

                  By virtue of being a general partner of Woodland  Partners and
an officer of Woodland Services Corp.,  which is a general partner of Seneca and
Woodland Fund, Marilyn Rubenstein may be deemed to have shared power to vote and
dispose of 444,312 shares of Common Stock,  representing  approximately  8.4% of
the outstanding shares of Common Stock.

                  By virtue of being a general  partner of Seneca  and  Woodland
Fund,  Woodland  Services  Corp.  may be deemed to have shared power to vote and
dispose of 282,706 shares of Common Stock,  representing  approximately  5.3% of
the outstanding shares of Common Stock.



<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 28 of 31 Pages
- ------------------------------                     -----------------------------


                  Item 5(c) is supplemented as follows:

                  (c)  The  following  table  sets  forth a  description  of all
transactions  in shares of Common Stock of the Issuer by the  Reporting  Persons
identified in Item 2 of this Schedule 13D effected since the filing of Amendment
No. 3 to the Schedule 13D.

                                   Purchase/      Number of Shares
                                  Acquisition        Purchased/        Purchase
Name of Stockholder                   Date            Acquired           Price
- -------------------                   ----            --------           -----

SERIES A PREFERRED STOCK

Barry Rubenstein                    11/12/98           65,000(1)        2.00(2)

Wheatley Partners, L.P.             11/12/98          717,600(1)        2.00(2)

Wheatley Foreign Partners,
L.P.                                11/12/98           62,400(1)        2.00(2)

Seneca Ventures                     11/12/98           32,500(1)        2.00(2)

Woodland Venture Fund               11/12/98           32,500(1)        2.00(2)



SERIES B PREFERRED STOCK

Seneca Ventures                     11/2/98            26,000(3)       10.00(4)

Woodland Venture Fund               11/2/98            26,000(3)       10.00(4)

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

(1)      Represents shares of Common Stock issuable upon conversion of shares of
         Series A  Preferred  Stock and upon  exercise  of  warrants to purchase
         shares of Common Stock.

(2)      Represents  the per  unit  purchase  price,  exclusive  of the  warrant
         exercise  price.  Each unit was  comprised of (i) one share of Series A
         Preferred Stock (convertible into four shares of Common Stock) and (ii)
         a warrant to purchase 2.5 shares of Common  Stock at an exercise  price
         of $0.50 per share.

(3)      Represents shares of Common Stock issuable upon conversion of shares of
         Series B Preferred  Stock and upon the exercise of warrants to purchase
         shares of Common Stock.

(4)      Represents  the purchase  price for (i) one share of Series B Preferred
         Stock and (ii) five warrants to purchase an aggregate of 12.5 shares of
         Common Stock (2.5 shares per  warrant),  the  smallest  fraction of the
         unit that was offered by the Company, exclusive of the warrant exercise
         price.  Each full unit,  purchase price $100,000,  was comprised of (i)
         10,000 shares of Series B Preferred Stock (each share  convertible into
         20 shares of Common  Stock)  and (ii)  50,000  warrants  (each  warrant
         exercisable  for 2.5 shares of Common  Stock) at an  exercise  price of
         $0.50 per share.

                  The  securities set forth in the table above were purchased in
private placement transactions from the Issuer.

                  Item 6(a) is supplemented as follows:

Item 6.           Contracts, Arrangements, Understandings or
                  Relationships With Respect to Securities of the Issuer.
                  -------------------------------------------------------

                  (a) Pursuant to the terms of a private placement  transaction,
on November 2, 1998, the Issuer closed on 20% of the total subscriptions for the
units comprised of (i) 10,000 shares of Series B Preferred Stock and (ii) 50,000
warrants

<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 29 of 31 Pages
- ------------------------------                     -----------------------------


comprised  of (i)  10,000  shares of Series B  Preferred  Stock and (ii)  50,000
warrants to purchase  shares of Common Stock made by each of the  purchasers  of
such units,  including  each of the Reporting  Persons listed in Item 5(c) above
that are set forth  below the  caption  "Series B  Preferred  Stock." All of the
purchasers,  including  the  Reporting  Persons  referred  to  in  the  previous
sentence,  have  committed  to  purchase,  pro rata and on the  same  terms  and
conditions,  the remaining 80% of their  respective  subscriptions  for units at
such time or times  designated by the "Buyer  Representative."  Barry Rubenstein
has been named the Buyer  Representative  of the purchasers in such transaction.
There can be no assurance that Mr.  Rubenstein will exercise his powers as Buyer
Representative  or that any of the Reporting  Persons  listed in Item 5(c) above
will purchase any additional  units. The aggregate  holdings and acquisitions of
securities  of the  Reporting  Persons set forth in this  Amendment No. 4 do not
include any  securities  that may be purchased  in a subsequent  closing of such
private placement transaction.



<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 30 of 31 Pages
- ------------------------------                     -----------------------------


                                   SIGNATURES

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

Dated:  November 23, 1998                WHEATLEY PARTNERS, L.P.
                                         By: Wheatley Partners, LLC,
                                             General Partner


                                         By:  /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, Chief Executive
                                              Officer

                                         WHEATLEY PARTNERS, LLC


                                         By:  /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, Chief Executive
                                              Officer


                                              /s/ Barry Rubenstein
                                         ---------------------------------------
                                                  Barry Rubenstein


                                             /s/ Irwin Lieber
                                         ---------------------------------------
                                                 Irwin Lieber


                                            /s/ Barry Fingerhut
                                         ---------------------------------------
                                                Barry Fingerhut


                                            /s/ Seth Lieber
                                         ---------------------------------------
                                                Seth Lieber


                                           /s/ Jonathan Lieber
                                         ---------------------------------------
                                               Jonathan Lieber


<PAGE>
- ------------------------------                     -----------------------------
CUSIP No. 227698 10 7                  13D           Page 31 of 31 Pages
- ------------------------------                     -----------------------------



                                         WHEATLEY MANAGEMENT LTD.


                                         By:  /s/ Irwin Lieber
                                              ----------------------------------
                                              Irwin Lieber, President


                                         WHEATLEY FOREIGN PARTNERS, L.P.
                                         By:  Wheatley Partners, LLC, General
                                              Partner

                                         By:   /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, Chief Executive
                                              Officer


                                         SENECA VENTURES

                                         By:  /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, a General
                                              Partner


                                         WOODLAND PARTNERS

                                         By:  /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, a General
                                              Partner


                                         WOODLAND VENTURE FUND

                                         By:  /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, a General
                                              Partner


                                         REV-WOOD MERCHANT PARTNERS

                                         By:  /s/ Barry Rubenstein
                                              ----------------------------------
                                              Barry Rubenstein, a General
                                              Partner


                                         By:  /s/ Marilyn Rubenstein
                                              ----------------------------------
                                              Marilyn Rubenstein

                                         WOODLAND SERVICES CORP.

                                         By: /s/ Barry Rubenstein
                                              ----------------------------------
                                             Barry Rubenstein, President




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