2 questions really... Is it hard to replace the fan/heatsink on the card? Is it done? If so, what kind of fan/heatsink am I looking for?
I'm planning to overclock it, not severely, just slightly if any.
Did some scouring on the forums and some searching, couldnt find an answer so anything that will lead me in the right direction would be awesome.

thanks,
C

At this point I'm going to say finding an after market cooler should be fairly easy, but I don't have an example yet.

The review. (http://www.gamebeat.net/forum/showthread.php?t=1147)

The product. (http://www.newegg.com/Product/Product.aspx?Item=N82E16835186016) but not in stock at Newegg at the moment.

If I have sufficient case cooling, would the stock gpu cooling be sufficient?

Run the card awhile without overclocking it to be sure its ok.

If youre going to only overclock it slightly the present cooler will probably be fine but you need to monitor temps.

Here are some aftermarket coolers you might want to look at,
www.arctic-cooling.com/vga1.php

www.newegg.com has these and others...