This has been posted before, I guess... I realized that my keyboard has been acting weirdly lately and so I saved my money for an Apple keyboard... I am wondering, are these fully compatable with Windows? On my current keyboard, there is a volume nob - you turn it and the volume increases/decreases. Apple has the buttons - will they work on XP? Also, will the eject key work? AND do I have to remember anything, like, is the Apple key with Windows key or is the Apple key the alt key or... I'm confused lol... Is this even a good purchase?