I don't think this is a Windows 7 issue, but a bluetooth pairing issue. I was able to pair my wireless keyboard and magic mouse to Windows 7 using the unpair-pair-pair routine and they now work successfully in both Windows 7 and OSX. However, whenever the iMac boots, I am not able to select which drive starts up. Even if I turn my keyboard on, it doesn't seem to respond prior to booting into OSX--so while I'm holding down the alt-option key on the keyboard, it boots right into OSX instead of giving me the option of OSX or Windows. I think this might be a result of the method I used to connect the devices to Windows 7 (unpaired in OSX, paired in Windows 7, paired in OSX). Right now my method of dealing with this is to have the system default boot into Windows 7... where I can then choose to restart in OSX. Otherwise I don't have many options, other than using a USB keyboard, which I'd like to avoid. Anyone have any ideas? Or is there a way for the system to default to letting me choose between OSX and Windows 7 at startup without holding the alt-option key?