The fan that came with my VisionTek GeForce4 Ti 4200 died and I bought a replacement cooling fan an Iceberq4 Pro. Now I am trying to remove the old fan and heatsink. I took out the fan but the heatsink is still attached. There are no screws or anything else attaching the heatsink to the chip except some type of adhevise glue holding it to chip. Any suggestions on how to remove it without damaging the card. And After removing the heatsink is there a good way to clean the gpu to make it ready for the new cooler?