FILED PURSUANT TO RULE 424(C)
REGISTRATION NUMBER 333-78129
SUPPLEMENT TO PROSPECTUS DATED AUGUST 13, 1999
THIS SUPPLEMENTS THAT CERTAIN PROSPECTUS DATED AUGUST 13, 1999
In August 1999, we entered into an agreement with RGC International Investors,
LDC pursuant to which it exercised 150,000 warrants that were issued to it on
March 31, 1999 in connection with the issuance of convertible debentures. The
common stock issuable upon exercise of the warrants was registered by us
pursuant to this prospectus dated August 13, 1999. In consideration for the
early exercise of its warrants, the exercise price for the warrants was
decreased from $12.375 to $7.857 and we issued RGC warrants to purchase an
additional 150,000 shares of common stock with an exercise price of $7.857.
Dated: November 18, 1999
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