At PDC 2008, there was a booth for Windows Sensors & Location Platform (more here). I was lucky enough to snag one of the free development kits. I’m running the Windows 7 build from the PDC, and it is very stable. I haven’t any problems with it so far. The main reason for me to use Windows 7 for for this API. Setting up the dev kit was really easy. I posted my setup experience on the forums here. If you are having trouble installing, maybe this thread can help. I just stumbled across this today: ......