Question about Windows

I'm a linux user, but I'm fooling around with Windows on a seperate machine and I have a question about thier system restore feature. It's XP, and I was wondering if i actually went in through the registry and removed something then rolled back to see if it had fully restored would it still load it? (Btw, no i didn't screw up and mess up the O/S :P i was just curious of what would happen ;)

Yes it would

thanks, 'preciate it

For registry, it will work.
the problem is when you erased the wrong sys file or (it's a dramatical) when you modify boot files... You can have big problems and the restore function won't help you.