Well lets see, been looking at some dirty stuff, eh? No problem everyone does it.
Anyway, try going to:
C:\Documents and Settings\YOURNAME\Local Settings
Replace YOURNAME with your Windows username..
I'm guessing you're on XP. Don't try to delete the folders: Browse in them and delete the contents inside.
If you're not on Windows XP or 2000 I can't help ya.
There will probably be 1 file that's in use. Thats usually uh a .dat file, which is normal.
Good luck!