That's on the C:\ Drive unless your disk is partitioned...
I think just your Program Files folder is just locked. Install Aces High in a different folder.
Nope..My Documents is under C:\Documents and Settings\<whatever username here>\My Documents
and if the Administrator has it locked out, then you can save work to that folder, but can not install programs or change them......if the Administrator has it setup that way......and God forbid you are setup on a network .......it really gets hairy then........