I'd love to hear any impressions on AppLocker. It will be one of 2 things that make the difference between whether I choose the Pro or Ultimate version of Windows 7. I'm going to watch some Youtube videos to get a nice visual rundown, but I still want to hear feedback & details from people I trust. How granular is the control over apps? Is it similar to that of a HIPS, or as simple as: "Do you want to allow this, or not?"