CERTIFICATE OF INCORPORATION
                                       OF
                         EIS INTERNATIONAL GROUP, LTD.


                                    ARTICLE I

                               NAME OF CORPORATION

                         The name of this corporation is

                          EIS INTERNATIONAL GROUP, LTD.



                                   ARTICLE: II

                                REGISTERED OFFICE

     The address of the registered office of the corporation in the State of
Delaware is 1013 Centre Road, in the City of Wilmington 19805, County of New
Castle; and the name of its registered agent at that address is Corporation
Service Company.


                                   ARTICLE III

                                     PURPOSE

     The purpose of the Corporation is to engage in any lawful act or activity
for which corporations may be organized under the General Corporation Law of
Delaware.


                                   ARTICLE IV

                            AUTHORIZED CAPITAL STOCK

     The Corporation shall be authorized to issue two classes of stock to be
designated, respectively, Common Stock and Preferred Stock. The total number of
shares which the Corporation shall have the authority to issue is three thousand
(3,000). The total number of shares of Common Stock shall be one thousand five
hundred (1,500) and each such share shall have a par value of one cent ($ .01)
The total number of shares of Preferred Stock stall be one thousand five hundred
(1,500) and each such share shall have a par value of one cent ($ .01).




     1. All shares of Common Stock, whenever issued, shall possess preemptive
rights to subscribe to any and all additional issues of Common Stock of the
Corporation, of any or all classes or series thereof; provided, however, that
the issuance of Common Stock pursuant to the exercise of rights under stock
options granted prior to August 1, 1994 shall not trigger such preemptive rights
with respect to outstanding shares of Common Stock, except as may otherwise be
provided in any such option agreement.
                

     2. The shares of Preferred Stock shall be issued from time to time in one
or more series. The Board of Directors is hereby vested with authority to fix,
pursuant to the bylaws as such may be supplemented from time to time by
resolution or resolutions, the designations and the powers, preferences, and
relative, participating, optional or other special rights, and qualifications,
limitations or restrictions thereof; and to fix the number of shares
constituting any such series; and to increase or decrease the number of shares
of any such series (but not below the number of shares thereof then
outstanding).
                
                                   ARTICLE V

                                  INCORPORATOR

     The name and mailing address of the incorporator of the Corporation is
Dawn Szafranski, Corporation Service Company, 1013 Centre Road, Wilmington,
Delaware 19805.

                                   ARTICLE VI

                        LIMITATION OF DIRECTOR LIABILITY
 
     To the fullest extent permitted by the Delaware General Corporation Law as
the same exists or may hereafter be amended, a director of the Corporation shall
not be liable to the Corporation or its stockholders for monetary damages for
breach of fiduciary duty as a director. If the Delaware General Corporation Law
is amended after the date of the filing of this Certificate of Incorporation to
authorize corporate action further eliminating or limiting the personal
liability of directors, then the liability of a director of the Corporation
shall be terminated or limited to the fullest extent permitted by the Delaware
General Corporation Law, as so amended from time to time . No repeal or
modification of this Article VI by the stockholders shall adversely affect any
right or protection of a director of the Corporation existing by virtue of this
Article VI at the time of such repeal or modification.

                                        2



                                   ARTICLE VII

                          CORPORATE POWER AND MANAGEMENT

     For the management of the business and for the conduct of the affairs of
the Corporation, and in further definition, limitation, and regulation of the
powers of the Corporation and of its directors and of its stockholders or any
class thereof, as the case may be, it is further provided:

               1. The Corporation reserves the right to amend, alter, change or
          repeal any provision contained in this Certificate of Incorporation,
          in the manner now or hereafter prescribed by statute, and all rights
          conferred on stockholders herein are granted subject to this
          reservation.

               2. After the original or other bylaws of the Corporation have
          been adopted, amended, or repealed, as the case may be, and in
          furtherance and not in imitation of the powers conferred by
          statute, the Board of Directors is expressly authorized to make,
          repeal, alter, amend and rescind the bylaws of the Corporation.

               3. The management of the business and the conduct of the
          affairs of the Corporation shall be vested in its Board of Directors.
          The number of directors which shall constitute the whole Board of
          Directors shall be fixed by, or in the manner provided in, the
          bylaws.  The phrase "whole Board" shall be deemed to mean the total
          number of directors which the Corporation would have if there were no
          vacancies. No election of directors need be by written ballot unless
          required by the bylaws of the Corporation.


     THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a corporation , do business both within and without the
State of Delaware, and in pursuance of the Delaware General Corporation Law,
does make and file this Certificate on July 20, 1994 .


                                                 /s/ Dawn Szafranski
                                                  --------------------
                                                  Dawn Szafranski
                                                  Incorporator


                                       3




                                 CERTIFICATE OF
                                       OF
                          CERTIFICATE OF INCORPORATION
                                       OF

                          EIS INTERNATIONAL GROUP, LTD.

                         (Pursuant to Section 241 of the
                General Corporation Law of the State or Delaware)

     The undersigned, being the directors of EIS INTERNATIONAL GROUP, LTD. (the
"Corporation"), do hereby certify:

     1. The name of the corporation is EIS International Group, Ltd.

     2. The Certificate of Incorporation of the Corporation was filed in the
office of the Secretary of State of the State of Delaware on the 20th day of
July, 1994.

     3. RESOLVED, that the Certificate of Incorporation of the Corporation is
hereby amended by deleting Article IV thereof in its entirety and by
substituting a new Article IV which shall read as follows:


                                   ARTICLE IV

                            AUTHORIZED CAPITAL STOCK

     The Corporation shall be authorized to issue two classes of stock to be
designated, respectively, Common Stock and Preferred Stock. The total number of
shares which the Corporation shall have the authority to issue is three thousand
(3,000). The total number of shares of Common Stock shall be one thousand five
hundred (1,500) and each such share shall have a par value of one cent ($ .01).
The total number of shares of Preferred Stock shall be one thousand five hundred
(1,500) and each such share shall have a par value of one cent ($ .01).

     1. All shares of Common Stock, whenever issued, shall possess preemptive
rights to subscribe to any and all additional issues of Common Stock of the
Corporation, of any or all classes or series thereof; provided, however, that
the issuance of Common Stock pursuant to the exercise of rights under stock
options granted prior to September 15, 1994 shall not trigger such





preemptive rights with respect to outstanding shares of Common Stock, except as
may otherwise be provided in any such option agreement.

     2. The shares of Preferred Stock shall be issued from time to time in one
or more series. The Board of Directors is hereby vested with authority to fix,
pursuant to the bylaws as such may be supplemented from time to time by
resolution or resolutions, the designations and the powers, preferences, and
relative, participating, optional or other special rights, and qualifications,
limitations or restrictions thereof; and to fix the number of shares
constituting any such series; and to increase or decrease the number of shares
of any such series (but not below the number of shares thereof then
outstanding).

     4. The Corporation has not yet issued, nor received any payment for, any of
its stock.

     5. This Certificate of Amendment has been duly adopted by the Board of
Directors of the Corporation in accordance with Section 241 of the General
Corporation Law of the State of Delaware.


                                       2



     IN WITNESS WHEREOF, the undersigned have signed and subscribed to this
Certificate of Amendment and affirm the same as true under the penalties of
perjury as of this 5th day of August, 1994.



                                             /s/ Gregory L. Zink
                                             -----------------------
                                             Gregory L. Zink
                                             Director

                                             /s/ Deborah E. Griffin
                                             -----------------------
                                             Deborah E. Griffin
                                             Director

                                             /s/ Steven R. Gumins
                                             -----------------------
                                             Steven R. Gumins
                                             Director


                                       3





                           CERTIFICATE OF DESIGNATION
                            Series A Preferred Stock
                           (Par Value $.01 Per Share)
                        of EIS INTERNATIONAL GROUP, LTD.

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

                             Pursuant to Section 151
                           of the General Corporation
                          Law of the State of Delaware
                              ---------------------


     The undersigned does hereby certify that the following resolution setting
forth the preferences and rights of the Series A Preferred Stock was duly
adopted by the Board of Directors of EIS INTERNATIONAL GROUP, LTD., a Delaware
corporation, pursuant to authority contained in Article IV of its Certificate of
Incorporation, dated July 20, 1994 and in accordance with the provisions of
Section 151 of the General Corporation Law of the State of Delaware:

     RESOLVED: That  the Board of Directors hereby authorizes the issuance of
up to one thousand (1,000) shares of Series A Preferred Stock of the
Corporation, and hereby fixes the rights, preferences, privileges and
restrictions thereon, in addition to those set forth in the Certificate of
Incorporation, as follows:

               (a) Designation.

               This resolution shall provide for a single series of Preferred
          Stock, the designation of which shall be Series A Preferred Stock
          (hereinafter "Series A Preferred Stock") and the number of authorized
          shares constituting the Series A Preferred Stock is one thousand
          (1,000).

               (b) Dividend Rate.

               (1) Dividends on the shares of Series A Preferred Stock
          shall accrue from the date of their original issue at a rate of ten
          percent (10%) per annum computed on the basis of the actual number of
          days elapsed in a 360-day year, and, to the extent any such dividends
          and any other dividends accrued with respect to such dividends
          pursuant to this paragraph (1) shall have accrued, but are in arrears
          because they have not been declared and paid, such





undeclared and unpaid dividends shall accrue additional dividends from the date
upon which such undeclared and unpaid dividends accrued until the date upon
which they are paid at the rate of ten percent (10%) per annum (compounded on
the Dividend Payment Dates and computed on the basis of the actual number of
days elapsed in a 360-day year). All such dividends shall be cumulative and
shall be payable when and as declared by the Board of Directors of the
Corporation, out of assets legally available for such purpose, on January 1 and
July 1 of each year, commencing, in the case of the first issuance of shares of
Series A Preferred Stock, January 1, 1995 (each date being hereinafter
individually a "Dividend Payment Date" and collectively the "Dividend Payment
Dates"), except that if any Dividend Payment Date is a Saturday, Sunday or
legal holiday then such dividend shall be paid on the next business day
following such Dividend Payment Date and no additional amount shall accrue as a
result of such delay.

     (2) Each dividend shall be paid to the holders of record of shares of
Series A Preferred Stock as they appear on the books of the Corporation on
the record date, not exceeding 30 days prior to the Dividend Payment Date
thereof, as shall be fixed by the Board of Directors of the Corporation.
Dividends in arrears may be declared and paid at any time, without reference to
any regular Dividend Payment Date, to holders of record on such date, not
exceeding 45 days preceding the payment date thereof, as may be fixed by the
Board of Directors of the Corporation.

     (3) Except as hereinafter provided, no dividends shall be declared or
paid or set apart for payment on the shares of Series A Preferred Stock for
any period if the Corporation shall be in default in the payment of any
dividends (including cumulative dividends, if applicable) on any shares of
Preferred Stock ranking, as to dividends, prior to the Series A Preferred
Stock, unless a dividend sufficient to cure such default shall be
contemporaneously declared and paid.

     (4) Except as hereinafter provided, no dividends shall be declared or
paid or set apart for payment on the Preferred Stack of any series ranking, as
to  dividends, on a parity with or junior to the Series A Preferred Stock for
any period unless full cumulative dividends have been or


                                        2




     contemporaneously are declared and paid on the Sales A Preferred Stock
     through the last Dividend Payment Date. When dividends are not paid in
     full, as at aforesaid, upon the shares of Series A Preferred Stock and any
     other Preferred Stock ranking on a parity as to dividends with the Series A
     Preferred Stock, all dividends declared upon shares of the Series A
     Preferred Stock and any other Preferred Stock ranking on a parity as to
     dividends with the Series A Preferred Stock shall be declared pro rata so
     that the amount of dividends declared per share on the Series A Preferred
     Stock and such other Preferred Stock shall in all cases bear to each other
     the same ratio that accrued dividends per share on the shares of the Series
     A Preferred Stock and such other Preferred Stock bear to each other.
     Holders of shares of Series A Preferred Stock shall not be entitled to any
     dividends, whether payable in cash, property or stock, in excess of full
     cumulative dividends, as provided in paragraphs (1) and (2) of this Section
     (b), on the Series A Preferred Stock.

          (5) So long as any share of the Series A Preferred Stock is
     outstanding, no dividend ( other than (i) a dividend in the Corporation's
     Common stock, par value $. 01 per share ("the Common Stock"), or in any
     other stock of the Corporation ranking junior to the Series A Preferred
     Stock as to dividends and upon liquidation or (ii) as provided in paragraph
     (4) of this Section (b), shall be declared, paid or set aside for payment,
     or other distribution declared or made, upon the Common Stock or upon any
     other stock of the Corporation ranking junior to or on a parity with the
     Series A Preferred Stock as to dividends or upon liquidation, nor shall any
     common Stock nor any other stock of the Corporation ranking junior to or on
     a parity with the Series A Preferred Stock as to dividends or upon
     liquidation be redeemed, purchased or otherwise acquired for any
     consideration (or any moneys be paid to or made available for a sinking
     fund for the redemption of any shares of any such stock) by the Corporation
     (except by conversion into or exchange for stock of a Corporation ranking
     junior to the Series A Preferred Stock as to dividends and upon
     liquidation); provided, however, that nothing contained in this paragraph
     (5) shall prevent the Corporation from repurchasing or redeeming any of its
     capital stock pursuant to the terms of any subscription or option agreement
     entered into with


                                        3





     any officer, director, employee, or consultant of the corporation.

          (c) Optional Redemption.

          The shares of Series A Preferred Stock are redeemable on the terms and
     conditions set forth below, at any time or from time to time, at the option
     of the  Corporation  expressed by resolution of the Board of Directors at a
     per share redemption price to be determined by the Board of Directors plus,
     in each case,  accrued and unpaid  dividends  thereon to the date fixed for
     redemption.

          (d) Procedure for Redemption

          (1) If fewer than all the outstanding shares of Series A Preferred
     Stock are to be redeemed, the number of shares to be redeemed shall be
     determined by the Board of Directors, subject to the provisions of section
     (c) above, and the shares to be redeemed shall be determined by lot or pro
     rata as may be determined by the Board of Directors or by any other method
     as may be determined by the Board of Directors in its sole discretion to be
     equitable.

          (2) Notice of a redemption shall be given by first class mail, postage
     prepaid  mailed  not  less  than 30 nor  more  than 60  days  prior  to the
     redemption date, to each holder of record of the shares to be redeemed,  at
     such holder's  address as the same appears on the books of the Corporation.
     Each such notice shall state:  (i) the redemption  date; (ii) the number of
     shares of Series A Preferred  Stock to be  redeemed  and, if fewer than all
     the  shares  held by such  holder  are to be  redeemed,  the number of such
     shares to be redeemed from such holder;  (iii) the redemption  price;  (iv)
     the  place  or  places  where  certificates  for  such  shares  are  to  be
     surrendered for payment of the redemption  price; (v) that dividends on the
     shares to be redeemed  will cease to accrue on such  redemption  date;  and
     (vi) any other information required by applicable laws or regulations.

          (3)  Notice  having  been  mailed  as  aforesaid  from and  after  the
     redemption  date  (unless  default  shall  be  made by the  Corporation  in
     providing  money for the  payment  of the  redemption  price of the  shares
     called for redemption)  dividends on the shares of Series A Preferred Stock
     so called for redemption shall cease to accrue, and said shares


                                        4




     shall no longer be deemed to be outstanding, and all rights of the holders
     thereof as stockholders of the Corporation (except the right to receive
     from the Corporation the redemption price plus accrued and unpaid dividends
     to the date fixed for redemption) shall cease. Upon surrender of the
     certificates for any shares so redeemed in accordance with said notice
     (properly endorsed or assigned for transfer, if the Board of Directors of
     the Corporation shall so require and the notice shall so state), such
     shares shall be redeemed by the Corporation at the redemption price
     aforesaid. In case fewer than all of the shares represented by any such
     certificate are redeemed, a new certificate shall be issued representing
     the unredeemed shares without cost to the holder thereof.

          (4) Any shares of Series A Preferred Stock which shall at any time
     have been redeemed shall, after such redemption, have the status of
     authorized but unissued shares of Preferred Stock, without designation as
     to series until such shares are once more designated as part of a
     particular series by the Board of Directors. None of such redeemed shares
     of series A Preferred Stock shall be reissued as shares of Series A
     Preferred Stock.

          (5) If the Corporation shall be in default in the payment of any
     dividends on any shares of Preferred Stock ranking, as to dividends, prior
     to the Series A Preferred Stock, then no shares of Series A Preferred Stock
     shall be redeemed and the Corporation shall not purchase or otherwise
     acquire any shares of Series A Preferred Stock.
            
          (6) Notwithstanding the foregoing provisions of this Section (d),
     unless the full cumulative dividends on all outstanding shares of Series A
     Preferred Stock shall have been paid or contemporaneously are declared
     and paid through the last Dividend Payment Date, no shares of Series A
     Preferred Stock shall be redeemed unless all outstanding shares of Series
     A Preferred Stock are simultaneously redeemed; provided, however, that the
     foregoing shall not prevent the purchase or acquisition of shares of Series
     A Preferred Stock pursuant to a purchase or exchange offer made on the same
     terms to all holders of outstanding shares of Series A Preferred Stock.
     

                                       5




          (e) Voting:

          (1) The shares of Series A Preferred Stock shall have the right to
     vote on all matters as to which the Common Stock can vote and shall, so
     long as any shares of series A Preferred Stock are outstanding, have twenty
     percent 20% of the total voting power with respect to all such matters.

          (2) In addition, the shares of Series A Preferred Stock shall have any
     other voting powers, either general or special, required by law or
     regulation.

          (3) In addition, and unless the vote or consent of the holders of a
     greater number of shares shall then be required by law, the consent of the
     holder of at least a majority of all of the shares of Series A Preferred
     Stock, and all other series of Preferred Stack ranking on a parity with the
     Series A Preferred Stock either as to dividends or upon liquidation and
     upon which like voting rights have been conferred and are then exercisable,
     at the time outstanding, given in person or by proxy, either in writing or
     by a vote at a meeting called for the purpose at which the holders of such
     shares shall vote together as a single class without regard to series,
     shall be necessary for authorizing, effecting or validating the amendment,
     alteration or repeal of any of the provisions of the Articles of
     Incorporation or of any amendatory Statement thereto so as to affect
     materially and adversely the rights, preferences, privileges or voting
     power of shares of Series A Preferred Stock. In case the shares of Series A
     Preferred Stock would be so affected in a materially different manner than
     any other series of Preferred Stock then outstanding by any such action,
     the holders of shares of Series A Preferred Stock shall be entitled to vote
     as a separate class, and the Corporation shall not take such action without
     the consent or affirmative vote, as above provided, of at least a majority
     of the total number of shares of Series A Preferred Stock then outstanding,
     in addition to or as a specific part of the consent or affirmative vote
     hereinabove otherwise required .

          (4) The increase of the authorized amount of the Preferred Stock, or
     the creation, authorization or issuance of any shares of any other class of
     stock of the Corporation ranking, (i) junior to the Series A Preferred
     Stock, or (ii) on a parity with the shares of Series A Preferred Stock, as
     to


                                       6



     dividends or upon liquidation, or the reclassification of any authorized or
     outstanding stock of the Corporation into any such junior or parity shares,
     or the creation, authorization or issuance of any obligation or security
     convertible into or evidencing the right to purchase any such junior or
     parity shares shall not be deemed to affect materially and adversely the
     rights, preferences, privileges or voting power of shares of Series A
     Preferred Stock.

          (f) Liquidation Rights.

          (1) Upon the dissolution, liquidation or winding up of the
     Corporation, whether voluntary or involuntary the holders of the shares of
     Series A Preferred Stock shall be entitled to receive out of the assets of
     the Corporation available for distribution to stockholders, before any
     payment or distribution shall be made on the Common Stock or on any other
     class of stock ranking junior to Series A Preferred Stock upon liquidation,
     the amount of one thousand dollars ($1,000) per share, plus a sum equal to
     all dividends (whether or not earned or declared) on such shares accrued
     and unpaid thereon to the date of final distribution.

          (2) Neither the sale, lease or exchange (for cash, shares of stock,
     securities or other consideration) of all or substantially all the property
     and assets of the Corporation nor the merger or consolidation of the
     Corporation into or with any other corporation or the merger or
     consolidation of any other corporation into or with the Corporation, shall
     be deemed to be a dissolution, liquidation or winding up, voluntary or
     involuntary, for the purposes of this Section (f).

          (3) After the payment to the holders of the shares of Series A
     Preferred Stock of the full preferential amounts provided for in this
     Section (f), the holders of shares of Series A Preferred Stock as such
     shall have no right or claim to any of the remaining assets of the
     Corporation.

          (4) In the event the assets of the Corporation available for
     distribution to the holders of shares of Series A Preferred Stock upon
     any dissolution, liquidation or winding up of the Corporation, whether
     voluntary or involuntary, shall be insufficient to pay in full all
     amounts to which such holders are entitled pursuant to paragraph (1)


                                       7



     of this Section if, no such distribution shall be made on account of any
     shares of any other class or series of Preferred Stock ranking in whole or
     in part on a parity with the shares of Series A Preferred Stock upon such
     dissolution, liquidation or winding up unless proportionate distributive
     amounts shall be paid on account of the shares of Series A Preferred Stock,
     ratably, in proportion to the full distributable parity amounts for which
     holders of all such parity shares are respectively entitled upon such
     dissolution, liquidation or winding up.

     (g) Priority.

          For purposes of this resolution, any stock of any class or classes;
     of the Corporation shall be deemed to rank:

          (1) Prior to the shares of the Series A Preferred Stock, either as to
     dividends or upon liquidation, if the holders of such class or classes
     shall be entitled to the receipt of dividends or of amounts distributable
     upon dissolution, liquidation or winding up of the Corporation, whether
     voluntary or involuntary, as the case may be, in preference or priority to
     the holders of shares of Series A Preferred Stock.

          (2) On a parity with shares of Series A Preferred Stock, either as to
     dividends or upon liquidation whether of not the dividend rates, dividend
     payment dates or redemption or liquidation prices per share or sinking fund
     provisions, if any, be different from those of the Series A Preferred
     Stock, if the holders of such stock shall be entitled to the receipt of
     dividends or of amounts distributable upon dissolution, liquidation or
     winding up of the Corporation, whether voluntary or involuntary, as the
     case may be, in proportion to their respective dividend rates or
     liquidation prices, without preference or priority, one over the other, as
     between the holders of such stock and the holders of shares of Series A
     Preferred Stock.

          (3) Junior to shares of Series A Preferred Stock, either as to
     dividends or upon liquidation, if such class or classes shall be Common
     Stock or if the holders of shares of Series A Preferred Stock shall be
     entitled to receipt of dividends or of amounts distributable upon
     dissolution, liquidation or winding up of the Corporation, whether
     voluntary


                                       8



     or involuntary, as the case may be, in preference or priority to the
     holders of shares of such class or classes.

          (h) Payments.

          All payments to a holder of Series A Preferred Stock shall be made at
     the office or agency of the Corporation maintained for such purpose in such
     coin or currency of the United States of America as at the time of payment
     is legal tender for the payment of public and private debts; provided,
     however, that at the option of the Corporation payment may be made (i) by
     check mailed to such holder at his address appearing on the records of the
     Corporation or, (ii) at the request of such holder, by wire transfer of
     immediately available funds to the address designated by such holder in
     writing.

     IN WITNESS WHEREOF, EIS International Group, Ltd. has caused its corporate
seal to be hereunto affixed and this Certificate to be signed by Gregory L.
Zink, as President and attested by Deborah E. Griffin, its Secretary, this 16th
day of August, 1994. The undersigned do hereby verify and affirm, under
penalties of perjury, that this Certificate is the act and deed of the
Corporation and that the facts stated herein are true.

                                        EIS INTERNATIONAL GROUP, LTD.
                                        a Delaware corporation

                                        By: /s/ Gregory L. Zink
                                           ----------------------
                                           Name: Gregory L. Zink
                                           Title: President

(Corporate Seal)

Attest: /s/ Deborah E. Griffin
       -----------------------   
       Name: Deborah E. Griffin
       Title: Secretary


                                       9



                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                        EIS INTERNATIONAL GROUP, LTD.,

     EIS INTERNATIONAL GROUP, LTD., a corporation organized and existing under
and by virtue of the General Corporation Law of the State of Delaware, DOES
HEREBY CERTIFY:

     FIRST: That the Board of Directors of said corporation by unanimous written
consent, adopted the following resolution:

     RESOLVED that the Board of Directors hereby declares it advisable and in
the best interest of the Corporation that Article I of the Certificate of
Incorporation be amended to read as follows:

                                    "ARTICLE I

                               NAME OF CORPORATION

                        The name of this corporation is:

                        HEURISTIC DEVELOPMENT GROUP, INC."

     SECOND: That said amendment has been consented to and authorized by the
holders of the majority of the issued and outstanding stock entitled to vote by
written consent given in accordance with the provisions of Section 228 or the
General Corporation Law of the State of Delaware. 

     THIRD: That the aforesaid amendment was duly adopted in accordance with 
applicable provisions of Sections 242 and 228 of the General Corporation Law of
the State of Delaware.

     IN WITNESS WHEREOF, said corporation has caused this Certificate to be
signed by Gregory L. Zink, its President, this 1st day Of March, A.D 1995
                                        
                                        By: /s/ Gregory L. Zink
                                            ---------------------------- 
                                            Gregory L. Zink, President 




                            CERTIFICATE OF AMENDMENT

                                       OF

                          CERTIFICATE OF INCORPORATION

                                       OF

                        HEURISTIC DEVELOPMENT GROUP, INC.

     HEURISTIC DEVELOPMENT GROUP, INC., a corporation organized and existing
under the laws of the State of Delaware (the "Corporation"), pursuant to the
provisions of the General Corporation Law of the State of Delaware (the "GCL"),
DOES HEREBY CERTIFY as follows:

     FIRST: The Certificate of Incorporation of the Corporation is hereby
amended by deleting ARTICLE FOURTH of the Certificate of Incorporation in its
present form and substituting therefor a new ARTICLE FOURTH in the following
form:

     This Corporation is hereby authorized to issue two classes of shares to be
designated respectively Preferred Stock ("Preferred Stock") and Common Stock
("Common Stock"). The total number of shares of capital stock which the
Corporation shall have authority to issue is twenty-five million (25,000,000).
The total number of shares of Preferred Stock which the Corporation shall have
the authority to issue is Five Million (5,000,000) and the total number of
shares of Common Stock which the Corporation shall have authority to issue is
Twenty Million (20,000,000). The Preferred Stock shall have a par value of $.01
per share and the Common Stock shall have a par value of $.01 per share.

     The Board of Directors may divide the Preferred Stock into any number of
series, fix the designation and number of shares of each such series, and
determine or change the designation, relative rights, preferences, and
limitations of any series of Preferred Stock. The Board of Directors (within the
limits and restrictions of any resolutions adopted by it originally fixing the
number of any shares of any series of Preferred Stock) may increase or decrease
the number of shares initially fixed for any series, but no such decrease shall
reduce the number below the number of shares then outstanding or duly reserved
for issuance.

     SECOND: The amendment to the Certificate of Incorporation of the
Corporation set forth in this Certificate of Amendment has been duly adopted in
accordance with the applicable provisions of Section 242 of the GCL (a) the
Board of Directors of the Corporation having duly adopted a resolution setting
forth such amendment and declaring its advisability and submitting it to the
stockholders of the Corporation for their approval, and (b) the stockholders of
the Corporation having duly adopted a resolution setting forth such amendment by
unanimous written consent.





     IN WITNESS WHEREOF, the Corporation has caused its corporate seal to be
hereunto affixed and this Certificate of Amendment to be signed by Gregory L.
Zink, its President, and attested by Deborah E. Griffin, its Secretary, this
17th day of October, 1996.

                                        HEURISTIC DEVELOPMENT GROUP, INC.

                                        By: /s/Gregory L. Zink
                                           ---------------------------------
                                             Gregory L. Zink
                                             President

[CORPORATE SEAL]

ATTEST:
/s/Deborah E. Griffin
- -----------------------------------
          Deborah E. Griffin
          Secretary

                                       -2-