I assume you have windows vista. Right click on the shortcut for DBC, choose properties, and in Compatibility check the box that says "Run as administrator".
I can't remember the location of the files (it hides it deep). Just make a file with a very unique name and then do a search for that filename (be sure that you are searching EVERYWHERE instead of whatever the default is). I seem to remember it being in C:\Program Data\....something rather.
Great Quote:
"Time...LINE??? Time isn't made out of lines...it is made out of circles. That is why clocks are round!" -Caboose