I'd just screw the fan in by attaching it to the grill. I've done that sort of thing before on my sister's computer. It looks like a very simple cooling system, but I can make you a deal on my old Thermaltake watercooler I have, I'd sell it to your for $30. I put over $100 into it, but since I got my kickass Swiftech system, I have no use for it now.