I'm trying to find a missing driver for my cousin's computer... there's an entry in the device manager that shows up as "Multimedia Controller". I looked up the device ID and apparently it's an ATI Theater 550 Pro. I downloaded the 9.12 version of the Catalyst software package and it keeps telling me it can't install the theater driver. I assume this is related to the unknown device in the device manager. I can't figure out how to get the correct driver installed for it.