Well, here's a not so pleasant update. I've tried everything that has been suggested - and here's the scoop -
After following the book in executing a drive cleaner sequence I was faced with the same problem after installing the fresh driver from the NVIDIA web site - 97.02 a 8800 series specific driver. Download and installation went as designed, but there was no driver info available to the vid card. Properties was blank with no info available as to card identity etc.
I then decided to try a XP repair installation. The installation went smoothly until the period of installation of devices. Then the non-microsoft approved software window came up and the program installation froze. This put me in a loop where the WIN XP installation program would keep attempting to restart the installation procedure get as far as the device installation and freeze at the attempt to load driver software for the video device and lock-up.
Wanting to avoid a complete reinstallation of WIN XP and loss of all my stuff. I got a spare 80gig drive that I have with WIN XP installed, hooked up a power and signal cable to the drive, went into bios and made that drive the boot drive and when win XP booted up I then went to the former boot drive and deleted all nividia data and ran Disk Cleanr again. I removed the extra drive, went into bios and restored the original boot order and started the win repair again --- it froze at the driver installation window again.
OK - removed the 8800 card and reinstalled the 7800 card used before. This time the win repair completed (I'm writing this now) and I thought the world was getting rosey , maybe bad 8800 vid card. Got system going, went to NVIDIA and dowloaded and installed the latest driver - - - you guessed it - no driver information no drivers for the vid card. Ive done the Intel board bios jumper bit, no joy. I haven't tried the CMOS battery yet and don't think it will be of any use anyway. Gonna try reflashing the bios next to last that made a lot of adjustments to USB function on the possibliity there may be a USB conflict because I've had some strange video anomalies when using the mouse in the new flight simulator (the main reason for the 8800 card) on the 7800 card.
If a bios reflash doesn't work - I'm stuck! What's up? Could some of the board security functions be blocking the installation of the vid card drivers? And the security functions in the C2D?