Dell :: Uninstalling MobileForce Drivers.. But Something Still There!

I'm awaiting the arrival of a FX2500 (a 7900GTX by any other name) for my Inspiron 9400 and had downloaded the drivers which were recommended to work (Forceware 169.04 - anything newer wouldn't have the O/C ability)...
However, I thought I'd give them a try on my current setup with a Go 7800 to see what effect they had...
I uninstalled the current drivers I was using (92.92 Mobileforce Drivers) using the uninstall option in the start menu...
I then made sure that all drivers for the display adapter had been uninstalled.
Then I ran Driver Cleaner Pro, then CCleaner (both the Cleaner and the Registry issue button) and Driver Sweeper for good measure...
However, when I rebooted and tried to install the Nvidia Forceware169.04 drivers the installation got in a little way, and then said that it could not continue as the drivers were not for the card it detected!..
It could have something to do with when I first booted in after removing all the drivers, XP said it had found a new card, asked for the drivers, but while it was doing this the little icon on the taskbar for a new card flashed up "new hardware found Nvidia 7800 Mobileforce X2"....
It appears that even though I've done everything I can think of to remove the "Mobileforce" label from my computer (including going into regedit and finding and deleting every string which mentions mobileforce) something still remains!
Or - does 169.04 simply not work with Go 7800s?
It's not a big problem because i've reinstalled my old Mobileforce drivers - but it's left me concerned that when I install my new FX2500 card next week, I may not be able to get rid of some stubborn bit of a program somewhere on my comp........................