fire i'd suggest that you put in some more dough and get a AMD 64 rig, so that you'd be on the safer side later. I'd suggest that you go for the foll:
AMD 64 2800+ 6.9k
MSI K8MM-ISLR - 5.4k
Kingston DDR400 512Mb - 4.5k
ATi Radeon 9600pro - 8.5k or the 9600Np for 6.8k
Total comes to arnd 25k with the 9600pro and 23k with the 9600np.
Give this a thought since this config will be future comtible