ok 1500 is really good I would go with a p4 3.2 lga and pci express gfx card and sata
for gfx go for the 6600 or 6800 they are both good make sure 256 ram on gfx card
A P4 and video card arent gonna let you do jack.
I am only 14 and am on a budget of about 1500-2000
Intel Route
ABit AA8 DuraMax [170USD]
Intel Pentium4-550 [290USD]
Sapphire X800XT [590USD]
WD Raptor 36.7GB [115USD]
Maxtor 300GB SATA 16MB [220USD]
Maxtor 300GB SATA 16MB [220USD]
Soundblaster Audigy2 ZS [75USD]
Pioner 108 [75USD]
LiteOn 523252 [20USD]
Chenming 602 [80USD]
OCZ PowerStream 520W [110USD]
Net: 1965USD
AMD Route
MSI K8N Ner2 Platinum [150USD]
Athlon64-3500 [270USD]
BFG 6800U OC [530USD]
Thermaltake Venus12 [35USD]
WD Raptor 36.7GB [115USD]
Maxtor 300GB SATA 16MB [220USD]
Maxtor 300GB SATA 16MB [220USD]
Soundblaster Audigy2 ZS [75USD]
Pioner 108 [75USD]
LiteOn 523252 [20USD]
Chenming 602 [80USD]
OCZ PowerStream 520W [110USD]
Net 1900USD
Naturally its very easy to chop the price down by clipping the harddrives etc