A few weeks ago NVIDIA released a new unified video driver. So I downloaded it from here. Bad idea. In my multimon configuration, the Dell 2007FP would flicker pretty badly in a variety of situations. It reminded me of Max Headroom. To make matters worse, DVD playback would not work. Thankfully I had taken a Ghost backup of my system before installing the driver. The Ghost restore was needed because driver rollback would not work.
The driver I'm using for my Windows XP MCE 2005 machine is http://www.nvidia.com/object/winxp_2k_93.71.html.
Moral of the story, "If it isn't broke, don't fix it!" That and make sure you are doing weekly backups.