Just assembled one under 30000 though wud go for a PSU change which will cost atleast 1500 more, its a budget PC but if u have bit more to spend go for C2D, I 965 based mb & DDE2 ram
specs:
D101 mb : 3750/-
Proc: Intel 3.06 mhz (HT) 3600/-
Zion DDR 512 MB 2800/-
iBall Cabinet, with iBall 400W PSU (it sucks) 1275/-
HP DVD-RW 16X 2100/-
FDD 3.5": 250/-
MS Basic mouse+kb combo 700/-
ATI radeon 1300Pro PCI-E 16X w 512MB DDR2 ram 6400/-
local 120mm xtra fan 40/-
Frontech Headphone 100/-
Samsung SyncMaster794mg 17'' : 4300/-
Hitachi 250GB HDD SATA : 3700/-
UPS APC 500 : 2000/-