hello Barbara,
I'm just wondering if you are looking in the right place. I too have a folder C:/windows/system32 but my operating system is definitely 64 bit, as shown on the photo in my previous posting.
Somewhere in the path I gave you, you should see a page with all sorts of information about your computer:
operating system (XP, Vista, Windows7, other), processor, ram, etc.
cheers, falcybe