Hi, I've got an HP Pavillion DV6 with a Radeon HD 7470M. After lots of googling, I've discovered that this card is effectively a rebadged Radeon HD 6490M - which was the card used in the early 2011 MacBook Pros. How would I go about getting this card to work on 10.7.2 Lion? If it's currently unsupported, would anybody be willing to take up the challenge of getting this card to work? Many, many thanks in advance!