Let me tell you first hand, DON'T change the cooling appartus on your video card. I got caught up in the hype of overclocking my Radeon 9600 Pro, and I broke mine. Graphic corruption all over the place, no more 3d. Could only do 2d. I don't know what happened, but I removed stock HSF, added some ramsinks, finished installed the heatpipe, now my video card does not work anymore. I advise you NOT to screw around with it, as it's a very delicate piece of equipment and it is very costly. Even though the Radeon 9600 may not sound so expensive, but for me, it was, and still is. Now I have a broken video card in my AGP slot, that can only do 2d.
Edit: I did this last night, so I'm still pist off... I only had the video card fo 2 weeks.