Well, loaded the new drivers for my 8800GTS and I couldn't play CoD2 online, all I got was a white screen.
Re-installed previous drivers game be working ok.
And while I'm bitching, Nvidia boast 'One driver for all video cards' yet when I select 8800 driver, it tells me this driver is exclusive to the 8800 series of cards.
Somebody at Nvidia has been down the pub too long