$211ish total. unless you need ram. then add like $40 for 2GB PC6400
That setup there would get you running without bottlenecking the GPU and allow you to enjoy most all the games out there at deceint speeds/details.
My p4 3.0 is overclocked to 3.3 and still bottlenecks my 7800GS AGP. So moving up a cpu is a much better upgrade then just keeping hte p4. Its ran its life a long time ago.
Currently your 7600GT was almost on par with my 7800gs.. Both good cards, but again your reaching the end of your cpu's abilities. I once upgraded a P3 933 from a GF2MX to a Geforce 3 TI 500. It got faster but only by like 20fps.. then when i got a p4 1.8 it unlocked the card and i was over 100fps faster in most of the games I played at the time.
The ATI card is a great card.. but its almost faster alone then your P4 lol. I would say get a slightly newer setup like this. and keep the 7600GT till you can afford both. The 7600GT will even get a speed boost with a new CPU.
guys got instead the Powercolor HD3870 PCS 512mb GDDR4 with Zerotherm cooler. it has built in sensor that automatically adjust fan speed. Will buy a new cpu this year got my eyes on Quad Intel or AMD whichever has best bang for buck in our country. Might as well budget it with $500.00-$700 right? I'll buy this 1st quarter motherboard and casing, then Processor 2nd quarter, 3rd quarter hard disk, 4th quarter will be memory and transfer my Video card. I got eyes for CrossfireX boards