I wanna replace the thermal paste on my 9800 GTX with some Arctic Cooling MX-2. There are no stickers covering any of the screws on thye bottom side of the card so i can un-screw it without doing any damage to any of them. When I pop the card, do i clean it off with a cloth and alchocol like on CPU's? Will i need to buy something for memory cooling, or will the thermal pads still work? If anyone has already done this, give advise if you can and also provide pictures if possible.