I don't know which site you're talking about, but there's some software called Optimum Video Poker which does the same thing. It's available for Mac or PC and it let's you enter any hand you want, analyze it, and then re-enter another hand. It's fast and efficient, and I use mine all the time.
It probably available at multiple sites, but I got mine through
www.OptimumPlay.com.
Hope that helps.