Tim,
The Viper wheels are polished, and then clearcoated. Are the scratches only in the clearcoat, or do you mean they have gone through the CC and down to the metal?
The only way to really remove them would be to use a very fine polishing compound. I bet the wheels would be a real PITA to buff, though. It would probably be pretty cheap to take the wheel in question to a body shop, have them remove the clearcoat and re-spray. Your wheel will look like new, and shouldn't cost more than $100 at MOST.