Exhibit 24

                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Cathleen P. Black
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Kenneth I. Chenault
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ J. Dormann
                                             ----------------------------
                                             Director


                   POWER OF ATTORNEY OF LOUIS V. GERSTNER, JR.

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Chairman and
Chief Executive Officer of International Business Machines Corporation, a New
York corporation, which will file with the Securities and Exchange Commission,
Washington, D.C., under the provisions of the Securities Law, an Annual Report
for 1998 on Form 10-K, hereby constitutes and appoints Douglas L. Maine,
Lawrence R. Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell,
and Andrew Bonzani his true and lawful attorneys-in-fact and agents, and each of
them with full power to act without the others, for him or her and in his or her
name, place and stead, in any and all capacities, to sign said 10-K Annual
Report and any and all amendments thereto, and any and all other documents in
connection therewith, with the Securities and Exchange Commission, hereby
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform any and all acts and things requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Louis V. Gerstner, Jr.
                                             ----------------------------
                                             Louis V. Gerstner, Jr.
                                             Chairman of the Board
                                             and Chief Executive Officer


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Nannerl O. Keohane
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Charles F. Knight
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Minoru Makihara
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Lucio A. Noto
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ John B. Slaughter
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Alex Trotman
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Lodewijk C. van Wachem
                                             ----------------------------
                                             Director


                        POWER OF ATTORNEY OF IBM DIRECTOR

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of
International Business Machines Corporation, a New York corporation, which will
file with the Securities and Exchange Commission, Washington, D.C., under the
provisions of the Securities Law, an Annual Report for 1998 on Form 10-K, hereby
constitutes and appoints Louis V. Gerstner, Jr., Douglas L. Maine, Lawrence R.
Ricciardi, Mark Loughridge, Jeffrey D. Serkes, Daniel E. O'Donnell, and Andrew
Bonzani his true and lawful attorneys-in-fact and agents, and each of them with
full power to act without the others, for him or her and in his or her name,
place and stead, in any and all capacities, to sign said 10-K Annual Report and
any and all amendments thereto, and any and all other documents in connection
therewith, with the Securities and Exchange Commission, hereby granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform any and all acts and things requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he or she might
or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or any of them may lawfully do or cause to be done
by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Charles M. Vest
                                             ----------------------------
                                             Director


                      POWER OF ATTORNEY OF MARK LOUGHRIDGE

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Vice President
and Controller of International Business Machines Corporation, a New York
corporation, which will file with the Securities and Exchange Commission,
Washington, D.C., under the provisions of the Securities Law, an Annual Report
for 1998 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr.,
Douglas L. Maine, Lawrence R. Ricciardi, Jeffrey D. Serkes, Daniel E. O'Donnell,
and Andrew Bonzani his true and lawful attorneys-in-fact and agents, and each of
them with full power to act without the others, for him or her and in his or her
name, place and stead, in any and all capacities, to sign said 10-K Annual
Report and any and all amendments thereto, and any and all other documents in
connection therewith, with the Securities and Exchange Commission, hereby
granting unto said attorneys-in-fact and agents, and each of them, full power
and authority to do and perform any and all acts and things requisite and
necessary to be done in and about the premises, as fully to all intents and
purposes as he or she might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them may
lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Mark Loughridge
                                             -----------------------------
                                             Mark Loughridge
                                             Vice President and Controller



                      POWER OF ATTORNEY OF DOUGLAS L. MAINE

      KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Senior Vice
President and Chief Financial Officer of International Business Machines
Corporation, a New York corporation, which will file with the Securities and
Exchange Commission, Washington, D.C., under the provisions of the Securities
Law, an Annual Report for 1998 on Form 10-K, hereby constitutes and appoints
Louis V. Gerstner, Jr., Lawrence R. Ricciardi, Mark Loughridge, Jeffrey D.
Serkes, Daniel E. O'Donnell, and Andrew Bonzani his true and lawful
attorneys-in-fact and agents, and each of them with full power to act without
the others, for him or her and in his or her name, place and stead, in any and
all capacities, to sign said 10-K Annual Report and any and all amendments
thereto, and any and all other documents in connection therewith, with the
Securities and Exchange Commission, hereby granting unto said attorneys-in-fact
and agents, and each of them, full power and authority to do and perform any and
all acts and things requisite and necessary to be done in and about the
premises, as fully to all intents and purposes as he or she might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and
agents or any of them may lawfully do or cause to be done by virtue hereof.

      IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney
this 23rd day of February 1999.

                                             /s/ Douglas L. Maine
                                             -----------------------------
                                             Douglas L. Maine
                                             Senior Vice President and 
                                             Chief Financial Officer