Yes, I'm back. I think I have this figured out now. Like an idiot, I was looking for an actual "Speedstep" setting in Vista. Apparently it's all handled in the Power Management settings.
See link:
http://www.vista4beginners.com/power-management?page=1
So if you set the processor Power Management to a minimum of 100% that should run your processor at your OC full time. I am at work right now and will try it when I get home to be sure.