MS Natural Keyboard has broken my Win2K.... HELP!!!

[mcgi6ah2]

I got a Microsoft Natural Pro Keyboard. I plugged in and installed the software, everything waas fine.Then I realise I can't use half the special keys so I go and update the keyboard driver to actually be the appropriate one for my keyboard. Now no keyboard works (nor mouse). While booting I can use the keyboard but not when I get to log on screen. Using safe mode or last good profile doesn't help at all. Is their anyway of recovering?