Yeah it runs fine but there is a huge problem with the trackpad.
FYI, I'm using bootcamp 3.2 with MBA 13" ultimate with Win 7 Pro.
1. 3 finger, 4 finger anything doesn't work. In other words, the only thing you can do with the trackpad with bootcamp Windows 7 is 2 finger scroll up and down and right click and tap to click.
2. Clicking is irregular, especially if you click the bottom left corner of the trackpad.
3. Scrolling is NOT smooth like in OSX. When you scroll, you can see the page move in big clumps. There's also no momentum scrolling.
4. The movement of the cursor isn't as consistent as it is in OSX. Sometimes, when you are using the trackpad, the cursor just stops moving for like 1-2 seconds.
My point is that bootcamp is definitely usable but it isn't as smooth as Windows 7 running on a PC.
If anyone knows solutions to these problems, that'd be awesome. I've also tried installing trackpad++ because lots of people recommended it but again, the trackpad improved but not as perfect as I'd want it to be.