Vbscript.dll's 'path too long.'

When I attempted an upgrade of Office 2000 to Office 2003 Pro on a Win2K
computer, on attempting to open Outlook 2003, I was told that it couldn't
register vbscript.dll because its path was too long. It was sitting right
in system32. Regsvr32.dll registered the darn thing, but I still was told
the path was too long on the next attempt to run Outlook. Repairing Office
was of no use.

Other computers had no such problem. Any ideas?