|Exhibit 99.1


I, Robert S. Bowen, certify that:


     1.    
          I have reviewed this quarterly report on Form 10-Q of Group 1 Software, Inc.;


     2.    
          Based on my knowledge, this quarterly report does not contain any untrue
          statement of a material fact or omit to state a material fact necessary to make
          the statements made, in light of the circumstances under which such statements
          were made, not misleading with respect to the period covered by this quarterly
          report;


     3.    
          Based on my knowledge, the financial statements, and other financial information
          included in this quarterly report, fairly present in all material respects the
          financial condition, results of operations and cash flows of the registrant as
          of, and for, the periods presented in this quarterly report;


     4.    
          The registrants other certifying officer and I are responsible for
          establishing and maintaining disclosure controls and procedures (as defined in
          Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:


     a)
          designed such disclosure controls and procedures to ensure that material
          information relating to the registrant, including its consolidated subsidiaries,
          is made known to us by others within those entities, particularly during the
          period in which this quarterly report is being prepared;

 
     b) evaluated the
          effectiveness of the registrants disclosure controls and procedures as of
          a date within 90 days prior to the filing date of this quarterly report (the
          Evaluation Date); and

 
     c) presented in this quarterly report our
          conclusions about the effectiveness of the disclosure controls and procedures
          based on our evaluation as of the Evaluation Date;


     5.    
          The registrants other certifying officer and I have disclosed, based on
          our most recent evaluation, to the registrants auditors and the audit
          committee of registrants board of directors (or persons performing the
          equivalent function):

 
     a) all significant deficiencies in the design or operation
          of internal controls which could adversely affect the registrants ability
          to record, process, summarize and report financial data and have identified for
          the registrants auditors any material weaknesses in internal controls; and


     b) any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrants internal
          controls; and


     6.    
          The registrants other certifying officer and I have indicated in this
          quarterly report whether or not there were significant changes in internal
          controls or in other factors that could significantly affect internal controls
          subsequent to the date of our most recent evaluation, including any corrective
          actions with regard to significant deficiencies and material weaknesses.
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  | /s/ Robert S. Bowen
 Chief Executive Officer
 November 14, 2002
| |  | ---------------------------------------------------------------

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|--

|I, Mark Funston, certify
that:


     1.    
          I have reviewed this quarterly report on Form 10-Q of Group 1 Software, Inc.;


     2.    
          Based on my knowledge, this quarterly report does not contain any untrue
          statement of a material fact or omit to state a material fact necessary to make
          the statements made, in light of the circumstances under which such statements
          were made, not misleading with respect to the period covered by this quarterly
          report;


     3.    
          Based on my knowledge, the financial statements, and other financial information
          included in this quarterly report, fairly present in all material respects the
          financial condition, results of operations and cash flows of the registrant as
          of, and for, the periods presented in this quarterly report;


     4.    
          The registrants other certifying officer and I are responsible for
          establishing and maintaining disclosure controls and procedures (as defined in
          Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:


     a)
          designed such disclosure controls and procedures to ensure that material
          information relating to the registrant, including its consolidated subsidiaries,
          is made known to us by others within those entities, particularly during the
          period in which this quarterly report is being prepared;


     b) evaluated the
          effectiveness of the registrants disclosure controls and procedures as of
          a date within 90 days prior to the filing date of this quarterly report (the
          Evaluation Date); and

 
     c) presented in this quarterly report our
          conclusions about the effectiveness of the disclosure controls and procedures
          based on our evaluation as of the Evaluation Date;


     5.    
          The registrants other certifying officer and I have disclosed, based on
          our most recent evaluation, to the registrants auditors and the audit
          committee of registrants board of directors (or persons performing the
          equivalent function):


     a) all significant deficiencies in the design or operation
          of internal controls which could adversely affect the registrants ability
          to record, process, summarize and report financial data and have identified for
          the registrants auditors any material weaknesses in internal controls; and


     b) any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrants internal
          controls; and


     6.    
          The registrants other certifying officer and I have indicated in this
          quarterly report whether or not there were significant changes in internal
          controls or in other factors that could significantly affect internal controls
          subsequent to the date of our most recent evaluation, including any corrective
          actions with regard to significant deficiencies and material weaknesses.
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| |  | /s/ Mark Funston
 Chief Financial Officer
 November 14, 2002
| |  | ------------------------------------------------------------

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|--