Exhibit 99.2

Explanation of Responses:

(i)   The Common Stock and Series A Convertible Preferred Stock is owned
      directly by King Street Capital, L.P. or King Street Capital Master
      Fund, Ltd, as indicated. King Street Capital Management GP, L.L.C. is
      the general partner of King Street Capital Management, L.P. (formerly
      King Street Capital Management, L.L.C.), the investment manager of
      King Street Capital, L.P., King Street Capital, Ltd. and King Street
      Capital Master Fund, Ltd. King Street Capital, Ltd. is the feeder
      fund for King Street Capital Master Fund, Ltd. King Street Master
      Advisors, L.L.C. is the sole shareholder of King Street Capital
      Master Fund, Ltd. and has supervisory power over King Street Capital
      Management, L.P. with respect to its role as the investment manager
      of King Street Capital Master Fund, Ltd.

(ii)  The Series A Convertible Preferred Stock has no expiration date.
      However, the Issuer may redeem the Series A Convertible Preferred
      Stock after December 13, 2009 if the daily closing price per share of
      its common stock exceeds 130% of $16.12 for 20 consecutive trading
      days ending on the date before the mailing of a redemption notice.

(iii) The number of shares of common stock into which each share of Series
      A Convertible Preferred Stock may be converted will be determined by
      dividing $1,000 (plus any accrued and unpaid dividends as of the date
      of conversion) by the applicable conversion price. The Series A
      Convertible Preferred Stock accrue dividends at a rate of 8% per
      annum. As of January 13, 2008, the shares of Series A Convertible
      Preferred Stock owned directly by King Street Capital, L.P. were
      convertible into 64,622 shares of Common Stock and the shares of
      Series A Convertible Preferred Stock owned directly King Street
      Capital Master Fund, Ltd. were convertible into 138,234 shares of
      Common Stock.

(iv)  The conversion price is subject to adjustment on a weighted-average
      basis in the event that the Issuer issues additional shares of common
      stock or common stock equivalents at a purchase price less than the
      then applicable conversion price, subject to certain exceptions. The
      conversion price is also subject to adjustment under certain other
      circumstances set forth in the Certificate of Designations governing
      the Series A Convertible Preferred Stock.

(v)   Each of the reporting person and the joint filers disclaims
      beneficial ownership of the reported securities except to the extent
      of its pecuniary interest therein, and this report shall not be
      deemed an admission that the reporting person or any joint filer is
      the beneficial owner of the securities for purposes of Section 16 of
      the Securities Exchange Act of 1934, as amended or for any other
      purpose.