RegEdit for Windows 7

ok... This might be a big stupid question but...
what can I do to repair a deletion to the RegEdit?
I deleted a item "Wow6432node" registry and of course many things are not working properly.
Do I have to reinstall Windows and thus everything else?
Is there a way to fix my blunder?
I cannot get into System Restore, RegEdit, and a host of other programs are nor giving me the finger....

I should have stayed in bed... anyone have any suggestions?

thanks

 

If you have a Win 7 installation disk, or a Win 7 System Repair disk, (but not a manufacturer's recovery disk), you can boot to it and run system restore from there.

http://windows.microsoft.com/en-us/...ns#what-are-system-recovery-options=windows-7