I had not noticed a difference in the keyboards but now that you mention it, the special keys along the top of my PC keyboard for mail, search etc. do not appear on the Mac keyboard. Since I never use them I had not noticed. The Fkeys go up to F12 on my PC keyboard but go to F16 on the Mac.. So far I have not tried to do anything with XP on the Mac that I couldn't do. I think I read somewhere that there are certain sound control functions that may be different.

Cheers,

Ray Z.