i like total commander - works the same since the norton commander until this age in all versions of windows! can do anything over there quickly and professionaly, why not use that?
hey, I think it's best to de-upgrade and then check the type of the system. Even if it's 32bit there's a chance you will be able to upgrade it to 64bit. In case not you can do a fresh install for 64bit if you really want..