i have a coolermaster heatsink and fan for my (athlon xp) computer. i need to know if you can buy new fans for these (60mm) and where is the best place in the uk? will any 60mm fan do? i was also thinking of getting a zalman flower cooler. are they easy to replace? i need some sort of paste don't i? is this risky, or is it worth the risk when i can just get a quieter fan?