As usual a BIG no to Intel original mobo, when you can get better mobo's in same price. check 630i chipset based
Palit N73PV in Rs 2850and XFX mobo's
WD 640 GB HDD = 3.6K
Samsung SATA Burner in 1100 or Sony IDE Burner in 1200
Cabinet PSU any of Zebronics whichever you like in less than 1.5-2K check in this list
theitwares-cabinets
In this setup you will get 2 GB single stick in 1800
Logitech combo of mouse+keyboard in 700
BTW what monitor you choose from Samsung.
Also as for speakers I say get Altec Lansing VS3251E in 3.3K
Your total sum would come up near by30-35K
But I think you left out UPS unless you do not need it.