I currently have a MSI HD6950 Twin Frozr II installed on my setup and runs everything good, but I would like to add another to run CrossfireX. How do I need to go about doing this? Do I just turn the system off and plug the extra card in or do I need to remove drivers and everything and then do everything again? There is no Crossfire tabs or anything in Catalyst Control Center either and this is my first time with a trying to CF. Thanks for any help!!