EXHIBIT NO. 24

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints 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 any selling
stockholders of the Company, in connection with certain transactions 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 under the Act on an
appropriate form 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
on April 1, 2002.

                                       /s/ Lynn J. Mangum
                                       -----------------------------------------
                                       Name:   Lynn J. Mangum
                                       Title:  Chairman of the Board,
                                               Chief Executive Officer
                                               and Director

                                                                  EXHIBIT NO. 24

                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes
and appoints Lynn J. Mangum 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 any selling
stockholders of the Company, in connection with certain transactions 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 under the Act on an
appropriate form 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
on April 1, 2002.

                                       /s/ Dennis R. Sheehan
                                       -----------------------------------------
                                       Name:   Dennis R. Sheehan
                                       Title:  President and Chief
                                               Officer

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

                                       /s/ Andrew C. Corbin
                                       -----------------------------------------
                                       Name:   Andrew C. Corbin
                                       Title:  Senior Vice President
                                               and Chief Financial
                                               Officer

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

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

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

                                       /s/ John J. Lyons
                                       -----------------------------------------
                                       Name:   John J. Lyons
                                       Title:  Director

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

                                       /s/ Jay DeDapper
                                       -----------------------------------------
                                       Name:   Jay DeDapper
                                       Title:  Director

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

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

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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 on April 1, 2002.

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

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

                                       /s/ Joseph J. Melone
                                       -----------------------------------------
                                       Name:   Joseph J. Melone
                                       Title:  Director

                                                                  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 any selling stockholders of the Company, in connection with
certain transactions 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 under the Act on an appropriate form 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
on April 1, 2002.

                                       /s/ Dennis A. Bovin
                                       -----------------------------------------
                                       Name:   Dennis A. Bovin
                                       Title:  Director