If a 'friend' has double-clicked an Excel attachment from an Outlook 2007 email and worked on it, saved it and then closed Excel and the email, where would that file be lurking (assuming I haven't exited Outlook?

I seem to remember Outlook 2003 putting stuff in
%username%\Local Setings\Temporary Internet Files in OLK prefixed folders, but no sign of anything relevant looking in there.

I'm he's on Windows XP.

Update
Temporary folder eventually found in:
C:\Documents and Settings\username\Local Settings\Temporary Internet Files\Content.Outlook
but need to navigate directly to this folder via pasting into 'Run...' dialog or Explorer to see it.

Unfortunately, Outlook deletes the attchment when you close the email.