I think it is rather a question of driver compatibility for the IR receiver.but what's to stop it from working with xp?
I do not owe this remote, thus I con't say much more about it : as an MCE remote, I use my Logitech 555
By the way, here in France, in Landerneau, we find this remote in the Local stores
Anyway, on my side I seriously think about using a wireless graphic tablet as a "remote mouse" in mediaportal : anybody got an experience with that kind of device ?