If u’r not buying 6600gt, you should get msi rs480m2 instead of k8n, 'cause its got excellent integrated video as good as geforce 6200 and much better then u’r current fx5200 and also got pci-e, and socket 939, so upgrading would be easy in future.
The complete rig then with above spec(minus the 6600gt) would then work out to be 28k.
And also one more thing u can do is ,sell u’r fx5200, and get more 256MB RAM more, 'cause integrated video would eat up some RAM
Asus K8n 5k…MSI rs480 …6k (939)
AMD 2800 5k…AMD 3000+ …7k (939)…cant use ur existing card …5200…sell it nd get sme more money nd as suggested get ram or a combo drive
512MB DDR 400 2.2k
80GB Hard drive Segate Cuda 2.8k
Cabinet with SMPS 1.4k
52x CDRW 1.3k
17" samsung monitor 5.5k
u can add up the rest of the components with the remaining money…try to go for the 939 socket…wud b better now