1
                                                                  EXHIBIT NO. 24



                                POWER OF ATTORNEY




         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum, Dennis R. Sheehan and Kevin J. Dell, and each of
them, as his true and lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any and all
capacities, to do any and all acts and things and to execute any and all
instruments and documents which said attorney-in-fact and agent may deem
necessary or desirable to enable The BISYS Group, Inc. (the "Company") to comply
with the Securities Act of 1933, as amended (the "Act"), and any rules,
regulations and requirements of the Securities and Exchange Commission (the
"Commission") thereunder, in connection with the registration under the Act of
shares of common stock of the Company, par value $.02 ("Common Stock"), to be
offered and sold by the Company pursuant to the exercise of employee stock
options, as approved by the Board of Directors of the Company, including
specifically, but without limiting the generality of the foregoing, the power
and authority to sign the name of the undersigned to a Registration Statement on
Form S-8 under the Act covering said shares of Common Stock, and any amendments
to such registration statement, to be filed with the Commission, and to any and
all instruments or documents filed as part of or in connection with such
registration statement or any amendments thereto; and the undersigned hereby
ratifies and confirms all that said attorney and agent shall do or cause to be
done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has executed this power of attorney
this 29th day of September, 1998.






                                             /s/Robert J. Casale
                                             -----------------------------------
                                             Name:  Robert J. Casale
                                             Title: Director


   2
                                                                  EXHIBIT NO. 24


                                POWER OF ATTORNEY




         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum, Dennis R. Sheehan and Kevin J. Dell, and each of
them, as his true and lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any and all
capacities, to do any and all acts and things and to execute any and all
instruments and documents which said attorney-in-fact and agent may deem
necessary or desirable to enable The BISYS Group, Inc. (the "Company") to comply
with the Securities Act of 1933, as amended (the "Act"), and any rules,
regulations and requirements of the Securities and Exchange Commission (the
"Commission") thereunder, in connection with the registration under the Act of
shares of common stock of the Company, par value $.02 ("Common Stock"), to be
offered and sold by the Company pursuant to the exercise of employee stock
options, as approved by the Board of Directors of the Company, including
specifically, but without limiting the generality of the foregoing, the power
and authority to sign the name of the undersigned to a Registration Statement on
Form S-8 under the Act covering said shares of Common Stock, and any amendments
to such registration statement, to be filed with the Commission, and to any and
all instruments or documents filed as part of or in connection with such
registration statement or any amendments thereto; and the undersigned hereby
ratifies and confirms all that said attorney and agent shall do or cause to be
done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has executed this power of attorney
this 29th day of September, 1998.






                                             /s/Thomas A. Cooper                
                                             -----------------------------------
                                             Name:  Thomas A. Cooper
                                             Title: Director


   3
                                                                  EXHIBIT NO. 24


                                POWER OF ATTORNEY



         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum, Dennis R. Sheehan and Kevin J. Dell, and each of
them, as his true and lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any and all
capacities, to do any and all acts and things and to execute any and all
instruments and documents which said attorney-in-fact and agent may deem
necessary or desirable to enable The BISYS Group, Inc. (the "Company") to comply
with the Securities Act of 1933, as amended (the "Act"), and any rules,
regulations and requirements of the Securities and Exchange Commission (the
"Commission") thereunder, in connection with the registration under the Act of
shares of common stock of the Company, par value $.02 ("Common Stock"), to be
offered and sold by the Company pursuant to the exercise of employee stock
options, as approved by the Board of Directors of the Company, including
specifically, but without limiting the generality of the foregoing, the power
and authority to sign the name of the undersigned to a Registration Statement on
Form S-8 under the Act covering said shares of Common Stock, and any amendments
to such registration statement, to be filed with the Commission, and to any and
all instruments or documents filed as part of or in connection with such
registration statement or any amendments thereto; and the undersigned hereby
ratifies and confirms all that said attorney and agent shall do or cause to be
done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has executed this power of attorney
this 29th day of September, 1998.






                                             /s/Jay DeDapper                    
                                             -----------------------------------
                                             Name:  Jay DeDapper
                                             Title: Director
   4
                                                                  EXHIBIT NO. 24




                                POWER OF ATTORNEY




         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum, Dennis R. Sheehan and Kevin J. Dell, and each of
them, as his true and lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any and all
capacities, to do any and all acts and things and to execute any and all
instruments and documents which said attorney-in-fact and agent may deem
necessary or desirable to enable The BISYS Group, Inc. (the "Company") to comply
with the Securities Act of 1933, as amended (the "Act"), and any rules,
regulations and requirements of the Securities and Exchange Commission (the
"Commission") thereunder, in connection with the registration under the Act of
shares of common stock of the Company, par value $.02 ("Common Stock"), to be
offered and sold by the Company pursuant to the exercise of employee stock
options, as approved by the Board of Directors of the Company, including
specifically, but without limiting the generality of the foregoing, the power
and authority to sign the name of the undersigned to a Registration Statement on
Form S-8 under the Act covering said shares of Common Stock, and any amendments
to such registration statement, to be filed with the Commission, and to any and
all instruments or documents filed as part of or in connection with such
registration statement or any amendments thereto; and the undersigned hereby
ratifies and confirms all that said attorney and agent shall do or cause to be
done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has executed this power of attorney
this 29th day of September, 1998.






                                             /s/John J. Lyons                   
                                             -----------------------------------
                                             Name:  John J. Lyons
                                             Title: Director
   5
                                                                  EXHIBIT NO. 24



                                POWER OF ATTORNEY




         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum, Dennis R. Sheehan and Kevin J. Dell, and each of
them, as his true and lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any and all
capacities, to do any and all acts and things and to execute any and all
instruments and documents which said attorney-in-fact and agent may deem
necessary or desirable to enable The BISYS Group, Inc. (the "Company") to comply
with the Securities Act of 1933, as amended (the "Act"), and any rules,
regulations and requirements of the Securities and Exchange Commission (the
"Commission") thereunder, in connection with the registration under the Act of
shares of common stock of the Company, par value $.02 ("Common Stock"), to be
offered and sold by the Company pursuant to the exercise of employee stock
options, as approved by the Board of Directors of the Company, including
specifically, but without limiting the generality of the foregoing, the power
and authority to sign the name of the undersigned to a Registration Statement on
Form S-8 under the Act covering said shares of Common Stock, and any amendments
to such registration statement, to be filed with the Commission, and to any and
all instruments or documents filed as part of or in connection with such
registration statement or any amendments thereto; and the undersigned hereby
ratifies and confirms all that said attorney and agent shall do or cause to be
done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has executed this power of attorney
this 29th day of September, 1998.






                                             /s/Neil P. Marcous                 
                                             -----------------------------------
                                             Name:  Neil P. Marcous
                                             Title: Director

   6
                                                                  EXHIBIT NO. 24



                                POWER OF ATTORNEY




         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum, Dennis R. Sheehan and Kevin J. Dell, and each of
them, as his true and lawful attorney-in-fact and agent, with full power of
substitution, for him and in his name, place and stead, in any and all
capacities, to do any and all acts and things and to execute any and all
instruments and documents which said attorney-in-fact and agent may deem
necessary or desirable to enable The BISYS Group, Inc. (the "Company") to comply
with the Securities Act of 1933, as amended (the "Act"), and any rules,
regulations and requirements of the Securities and Exchange Commission (the
"Commission") thereunder, in connection with the registration under the Act of
shares of common stock of the Company, par value $.02 ("Common Stock"), to be
offered and sold by the Company pursuant to the exercise of employee stock
options, as approved by the Board of Directors of the Company, including
specifically, but without limiting the generality of the foregoing, the power
and authority to sign the name of the undersigned to a Registration Statement on
Form S-8 under the Act covering said shares of Common Stock, and any amendments
to such registration statement, to be filed with the Commission, and to any and
all instruments or documents filed as part of or in connection with such
registration statement or any amendments thereto; and the undersigned hereby
ratifies and confirms all that said attorney and agent shall do or cause to be
done by virtue hereof.

         IN WITNESS WHEREOF, the undersigned has executed this power of attorney
this 29th day of September, 1998.






                                             /s/Thomas E. McInerney             
                                             -----------------------------------
                                             Name:  Thomas E. McInerney
                                             Title: Director