It is likely that account is now corrupted.

Have you tried System Restore yet? I'm not hopeful it will work, but it is worth a try. Do that from the original account, the one you were in when you renamed the folder.

I assume you have tried renaming the folder back to what it was? Then simply copy those entries in the Temp folder back to where they should be perhaps.

You can also try, (but again I am not hopeful), the "Fix Corrupted Profile" method as suggested here;
http://windows.microsoft.com/en-US/windows-vista/fix-a-corrupted-user-profile

To do that you will need to create a new profile, (account), and copy the contents of the Temp file to the new profile.

Good luck.

Mark