I've got the XFX 8800 GT alpha dog card. I just received my new cooler, the Accelero S1 rev 2. This is my first mod of a GPU. Before I go crazy with a screw driver, can anyone tell me which screws hold the stock fan to the GPU?There are 12 screws on the backside and I think two smaller ones on the connector. Do all 12 screws need to come out? Figure better to ask and do the job right the first time.