Your computer is affected by a mallicious code in the webpage you visited.Basicly you need to change back your registry. But be careful, a mistake in modifying your registry could make your computer unbootable. Anyway, the webpage your visited shoud go to hail, kill it.
By the way, your computer is vulnerable to a lot of virus. There is a back door of the IE you used. That webpage just changed a littble bit of your registry. Actually a more malicious code could make your computer crash. Need more info, contack oldwolf.