avoid buying secondhand parts unless as previously stated you get a decent warranty
the 3700 is a good choice
the MB has a good spec so should keep you going for a while
a 6600GT is probably the best graphics card for the money one of those will give decent performance and not cost too much
Geil, Corsair, Crucial, OCZ all make decent RAM, i would go for the Geil Value, its cheapish but has a low CAS latency and gives good performance
for what you want to upgrade your looking at about £450
www.overclockers.co.uk
I'm out of bed and dressed, what more do you want?
I always take life with a grain of salt, ... a slice of lemon, ...and a shot of tequila
I used to have an open mind but my brains kept falling out
One more step to enlightenment ... but which way ?