This useful app allows you to run different versions of Internet Explorer on the same Windows install, which sounds pretty clever and indeed it is. A simple download and install and it seems to do exactly what it promises. Now why can't Microsoft provide that kind of functionality, I wonder?

I also tried the IE7 standalone install but I can't tell how successful that's been yet. IE7 started up just fine, but the first dropdown I tried to interact with throw a 'popup blocked' error. Could be a glitch but I can live with it for now.

Install multiple versions of IE on your PC
Standalone IE7