Re: N00b here...gaming computer.
Yeah, right now isn't the best time to go for an AM2 system. You could always overclock your 3200+ to a 3500+. I believe there is a guide in the general computer hardware and software on how to overclock your cpu. Try going for a X2 4400+, or X2 4000+. Those are speed demons, which will utilize the dual cores to give excellent performance.
Rig -- Emachines T5026, 3.06ghz P4, 300W Bestec PSU, 160 sata hd, 512mb dual channel 3200 ram @ 3-3-5-8, ATI Radeon 9250 pci, dual layer 16x dvd+/-rw.