I have successfully used an Apple Pro keyboard (USB) with a PC running Windows 98.
Too bad the wireless one apparently doesn't plug and play that way.
You could search at support.apple.com and see if they have released a driver.
g30ffr3y, Apple's wireless keyboard is cheaper than the BlueTooth PC keyboards I've seen. Admittedly I haven't looked too thoroughly for deals, and it was a few months ago when I looked. I'm not sure why BlueTooth keyboards are so spendy on the PC side. I had to buy a wireless keyboard for work, all the BlueTooth ones were spendy, so I bought the proprietary-tech Logitech one. I wish I had found an affordable BlueTooth one, because the range on the Logitech is pretty short. If I had thought of buying Apple's, I probably would have tried it. That would get the attention of all the people who show up to use that PC for their presentation! 😀
Cheers,
Crikey