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Filed pursuant to Rule 424(b)(1)
Registration No. 333-34083
PROSPECTUS SUPPLEMENT
(To Prospectus Dated August 27, 1997)
The Prospectus is hereby supplemented on Page 4 to reflect the change in the
identity of the Selling Stockholder (as set forth in the table therein) from SBC
Warburg Inc. to SBC Warburg Dillon Read Inc. The change became effective
September 2, 1997 as a result of a merger whereby SBC Warburg Dillon Read Inc.
succeeded to the ownership of the Convertible Notes. In addition, the reference
on page 20 under "Plan of Distribution" to "SBC Warburg Inc." is hereby changed
to "SBC Warburg Dillon Read Inc." The information in this Supplement was
provided by SBC Warburg Dillon Read Inc.
The date of this Supplement is September 4, 1997.
