EXHIBIT 4
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                                POWER OF ATTORNEY




           General Electric Erste Beteiligungs GmbH (the "Company"), duly
incorporated under the laws of Germany, with its registered address at
Bleichenbrueke 9, 20354 Hamburg, Germany, duly represented by the undersigned,
grants a power of attorney, in favour of:

-          Mr. Jonathan Sprole, Managing Director & General Counsel of GE Equity
           with business address at 120 Long Ridge Road, Stamford, CT 06927,
           United States of America;

-          Mrs. Tracie Butler Giles, Vice President & Associate General Counsel
           of Transport International Pool, Inc., with business address at 436
           West Lancaster Avenue, Devon, PA 19333, United States of America;

in order that each of them, either jointly or severally, may sign regulatory
filings with the Securities and Exchange Commission and other U.S. state
securities regulatory agencies for and on behalf of the Company.

           This Power of Attorney will be effective as of the date hereof and
shall remain in force until December 31, 2003, unless terminated earlier by the
Company.

           In witness thereof this Power of Attorney is granted on February 14,
2003.




Signed: /s/ Karl-Heinz Schweer
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Name:   Karl-Heinz Schweer
Title:  Managing Director
        General  Electric Erste Beteiligubgs GmbH
Date:   February 14, 2003