Have you looked in the C Drive | Documents and Settings?
You might see that user profile and be able to access the files and copy them over to the other user profile.
I have 2 profils for 2 users in a pc. For some reason that I do not know, Windows XP do not open the 1st one and they have deleted suddenly all the files from My Documents! From the other user's profil I can not find anything but in the c drive I can see that the capasity is the same as before...
What can I do for back up my files???

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic