EXHIBIT 6
                                                                       ---------
                               POWER OF ATTORNEY


TIP Overseas Holding B.V. (the "Company"), duly incorporated under the laws of
the Netherlands, with its registered address at Amsteldijk 166, 1079 LH
Amsterdam, The Netherlands and registered at the Chamber of Commerce in
Amsterdam under number 33188248, 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/ Robert Oudmeyer
        --------------------------
Name:   Robert Oudmeyer
Title:  Managing Director
        TIP Overseas Holding B.V.
Date:   February 14, 2003