hunter315 :
You'd be hard pressed to find a couple these days that couldn't run a 64 bit OS. Your main problem is going to be if you intended to "upgrade" your OS, the old OS is completely incompatible with the new one so its going to make a new install from scratch. You should be able to find a Windows.old file that has all your old documents if you need them.
My Laptop is screwed, all that remains is a black screen, my mother tried to reinstall it from scratch but accidentally used a 64 bit disc. Is it possible to get the hard drive out of there and put the surviving documents on my other computer?