I have a late 2007 MacBook 3,1 with windows 7 x64 installed on it as part of bootcamp. I can't set the function keys to behave as they would on a pc... I have to press fn each time in order to use their original functionality. I don't have any kind of boot camp option under control panel, so I'm puzzled what to do.
Ok, I have downloaded bootcamp 4 and installed it with BootCamp64.msi and now I have a BootCamp option under control panel. Works like charm!
I'm not entirely clear what the problem is, but I expect it might be solved by going to (while it's running Mac OS) System Preferences > Keyboard > "Use all F1, F2 keys, etc. as standard function keys" and toggling it.
That's just a hypothesis; I don't have Boot Camp.