repairing a corrupted registry w/o system restore

so, i was bored today and thought i'd try to overclock my computer some more. I was following a guide i found online to test the limits of my amd64 setup. I got up to 250 fsb, and everything looked like it was going fine when i booted in to windows, but my screen kept blinking on and off, as if my video card was trying to change the settings, then the screen finally went black for good, and my system rebooted. when it got back to windows, a message box popped up saying:

so i found this: http://support.microsoft.com/?kbid=307545 and started following it. only thing is, i had turned "system restore" off for all drives, because i wanted to save disk space and make windows faster, and i thought "who needs this?" well, obviously, i need it, and i'm kicking myself now.

So since I don't have any system restore point before now, I am sitting on what windows thinks is a fresh install, but luckily all of my files are still intact.

So my question is, does anyone know of a program I can use to repair the backup of my registry I made by following this article: http://support.microsoft.com/?kbid=307545 ??

thanks in advance

btw, i'm on windows xp pro sp2