JOINT FILING AGREEMENT AND POWER OF ATTORNEY November 13, 2006
EXHIBIT 24.1
November 13, 2006
Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended, and the
rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of
each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange
Act or any rule or regulation thereunder (including any amendment, supplement, and/or exhibit
thereto) with the Securities and Exchange Commission (and, if such security is registered on a
national securities exchange, also with the exchange), and further agrees to the filing,
furnishing, and/or incorporation by reference of this Joint Filing Agreement and Power of Attorney
as an exhibit thereto. This Joint Filing Agreement and Power of Attorney shall remain in full
force and effect until revoked by any party hereto in a signed writing provided to each other party
hereto, and then only with respect to such revoking party.
Know all men by these presents, that each party hereto hereby constitutes and appoints each of
J. Xxxxx Xxxxxxxx and Xxxxxxx X. Minces, and each of them, as the true
and lawful attorneys-in-fact and agents, or attorney-in-fact and agent, of such party with full
power and authority and full power of substitution and resubstitution, for, in the name of, and on
behalf of such party, place and stead, in any and all capacities, (i) to execute any and all
filings required by such party under Section 13 or Section 16 of the Exchange Act or any rule or
regulation thereunder (including any amendment, supplement, and/or exhibit thereto), for, in the
name of, and on behalf of such party, (ii) to do and perform any and all acts for, in the name of,
and on behalf of such party which said attorneys-in-fact, or any of them, determine may be
necessary or appropriate to complete and execute any and all such filings, amendments, supplements,
and/or exhibits, and any and all other document(s) in connection therewith, (iii) to file such
filings, amendments, supplements, exhibits, and/or documents with the Securities and Exchange
Commission (and, if such security is registered on a national securities exchange, also with the
exchange), and (iv) to perform any and all other acts that said attorneys-in-fact or agents, or any
of them, determine may be necessary or appropriate in connection with the foregoing that may be in
the best interest of or legally required by such party, granting unto said attorneys-in-fact and
agents, or any of them, full power and authority to do and perform each and every act and thing
requisite or necessary to be done in and about the premises, as fully to all intents and purposes
as such party might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents, or any of them, shall do or cause to be done by virtue hereof. Each
party hereto hereby acknowledges that the foregoing attorneys-in-fact and agents, or any of them,
in serving in such capacity at the request of such undersigned party, are not assuming any of the
responsibilities of the undersigned to comply with Section 16 or Section 13(d) of the Securities
Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.
IN WITNESS WHEREOF, each party hereto, being duly authorized, has caused this Joint Filing
Agreement and Power of Attorney to be executed and effective as of the date first written above.
| Highland Credit Strategies Fund |
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| By: | /s/ Xxxxx Xxxxxxx | |||
| Name: | Xxxxx Xxxxxxx | |||
| Title: | President for Highland Credit Strategies Fund | |||
| Highland Capital Management, L.P. |
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| By: | Strand Advisors, Inc., its general partner | |||
| By: | /s/ Xxxxx Xxxxxxx | |||
| Name: | Xxxxx Xxxxxxx | |||
| Title: | President | |||
| Strand Advisors, Inc. |
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| By: | /s/ Xxxxx Xxxxxxx | |||
| Name: | Xxxxx Xxxxxxx | |||
| Title: | President | |||
| Xxxxx Xxxxxxx |
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| By: | /s/ Xxxxx Xxxxxxx | |||
| Name: | Xxxxx Xxxxxxx | |||
