Not only does IE7Pro provide functionality similar to Firefox's AdBlock... it also provides the ability to customize IE7's behavior in ways that are practical for "regular" users. And... IT WORKS!!! IE7Pro also has an active user community forum and wiki which I found very helpful. Now that I have found an easy way to block ads in IE7, I'm no longer missing Firefox! I suspect that IE7Pro has what it takes to become a very popular add-in for Microsoft's latest browser!