It's just that I believe the Q6600, once overclocked, is a great CPU, most people overestimate CPU importance in games..
But if you really want to throw a 180€ CPU away, you should sell the whole comp before the components aren't worth anything and buy some combo i5 750 + P7P55D + 4GB DDR3-1600, a NH-U12P SE2 cooler, a good video card and your PC will be the best on gamezone..
Good luck saving, I know I can't