+1 for Anubis
The core i5 platform beats any amd rig at that price . Only if u r a very hardcore gamer playing every game at max eye candy with all settings high and want 60+ fps in 1920x1080 resolution , then only opt for amd rig because it can fit the ATI 5850 within ur budget.
Otherwise if...
+1 for Anubis only if u have budget of 17k-20k.
Otherwise if ur budget is less than 15k , go for
PII 550 - 5.2k
Biostar 790GX A3+ - 6.2k
4gb DDR3 - 5k
Total - 17k
Whichever way round ur budget touches 17k.
I think the i5 rig will be a better choice.