OK, I've had Windows 7 for a few weeks now and have been loading up my new 1TB hard drive with games, both old and new. One question I have is, how the heck does Windows know it's a game I just installed in order to put it in the game group off the start button? Every game I've installed so far has been sensed correctly and put into the games group, which is nice to keep them all collected together instead of shortcuts all over the desktop.
I've noticed that the installation path does make a difference. When I install something to C:\Users\<username>\Games, Windows will automatically add the shortcut to the Games folder. When I install it somewhere else, it doesn't always work, in which case you have to copy the .exe file to the Games folder before Windows picks it up.