It's not, but you posted the same request in a bunch of places.
On to the problem. There are a couple of ways to get rid of the driver, one way I've used is to temporarily install an older video board to throw Windows "off the scent", and try to kill off the old driver. You might also have to find references to the driver files in the registry and nuke them also. Finally, I'd contact tech support for the card in question, they may have a complete driver uninstall, I know that Matrox has one for their cards.
Unless you're sure of what you're doing, I'd just leave those files alone, disk storage is cheap, and a few megs of drivers won't hurt anything. You'd be positively amazed at what is stashed around on your HD not being used!
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