Hey ,Ive just picked up a USB Apple Keyboard w/ the two additional Usb Ports on the top of the KB. I thought this link might of interest to you. The apple KB is Completely NT compatable.and there is a windows driver on the sight that will enable the KB Power on/off button. SNOOSE
Link:
http://www.trinityworks.co.jp/US/software/AppleKPro/index.php