EXHIBIT 24


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POWER OF ATTORNEY


STATE OF: Pennsylvania


     Know all persons by these presents that the undersigned Director of SBM
Certificate Company, a Maryland corporation ("Company"), constitutes and
appoints [John J. Lawbaugh] and [Eric M. Westbury], and each of them, as my true
and lawful attorney-in-fact and agent, with full power of substitution, for me,
and in my name, place and stead, in any and all capacities to sign the Annual
Report Form of the Securities and Exchange Commission, filed under the
Securities Exchange Act of 1934, and any and all amendments thereto, with all
exhibits, instruments, and other documents necessary or desirable, hereby
ratifying and confirming all that said attorney-in-fact and agent or his
substitute, may lawfully do or cause to be done by virtue hereof.



/s/ Nancy Hopkinson                                           3/29/02
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Signature of Director                                         Date
Nancy Hopkinson

On this 29th day of March, 2002, before me Jaime N. Scheck the
undersigned Notary Public, personally appeared [Nancy Hopkinson]
known to me to be the person whose name is subscribed to the above Power of
Attorney, and acknowledged that he executed it.

Witness my hand and official seal


/s/ Jaime N. Scheck
----------------------------------
         Notary Public

MY COMMISSION EXPIRES: September 5, 2005


<PAGE>


POWER OF ATTORNEY


STATE OF: District of Columbia


     Know all persons by these presents that the undersigned Director of SBM
Certificate Company, a Maryland corporation ("Company"), constitutes and
appoints [John J. Lawbaugh] and [Eric M. Westbury], and each of them, as my true
and lawful attorney-in-fact and agent, with full power of substitution, for me,
and in my name, place and stead, in any and all capacities to sign the Annual
Report Form of the Securities and Exchange Commission, filed under the
Securities Exchange Act of 1934, and any and all amendments thereto, with all
exhibits, instruments, and other documents necessary or desirable, hereby
ratifying and confirming all that said attorney-in-fact and agent or his
substitute, may lawfully do or cause to be done by virtue hereof.



/s/ Brian P. Murphy                                           4/5/02
-------------------------                                --------------
Signature of Director                                         Date
Brian P. Murphy

On this 5th day of April, 2002, before me Chandler V. Hottel the
undersigned Notary Public, personally appeared [Brain P. Murphy]
known to me to be the person whose name is subscribed to the above Power of
Attorney, and acknowledged that he executed it.

Witness my hand and official seal


/s/ Chandler V. Hottel
-------------------------
         Notary Public

MY COMMISSION EXPIRES: February 15, 2007


<PAGE>


POWER OF ATTORNEY


STATE OF: District of Columbia


     Know all persons by these presents that the undersigned Director of SBM
Certificate Company, a Maryland corporation ("Company"), constitutes and
appoints [John J. Lawbaugh] and [Eric M. Westbury], and each of them, as my true
and lawful attorney-in-fact and agent, with full power of substitution, for me,
and in my name, place and stead, in any and all capacities to sign the Annual
Report Form of the Securities and Exchange Commission, filed under the
Securities Exchange Act of 1934, and any and all amendments thereto, with all
exhibits, instruments, and other documents necessary or desirable, hereby
ratifying and confirming all that said attorney-in-fact and agent or his
substitute, may lawfully do or cause to be done by virtue hereof.



/s/ Marialice B. Williams                                4/5/02
-------------------------                                --------------
Signature of Director                                         Date
Marialice B. Williams

On this 5th day of April, 2002, before me Barry H. Deutschman the
undersigned Notary Public, personally appeared [Marialice B. Williams]
known to me to be the person whose name is subscribed to the above Power of
Attorney, and acknowledged that he executed it.

Witness my hand and official seal


/s/ Barry H. Deutschman
-------------------------
         Notary Public

MY COMMISSION EXPIRES:  June 14, 2002