After applying the 11 July 2007 Windows update package (Windows XP)
outlook.exe appeared to have been moved to a different place (?) and
Outlook2003 cannot start Word2003 as e-mail editor. Resetting Outlook options
and Office repair does not help nor does Checking/repairing registry errors
and defragmenting registry (by Registry First Aid). Un-applying Windows
update no option.

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Hesseldahl