never, ever go with 945
and never, ever go with¨original¨ intel motherboards. They suck so much that its a sin to buy them, with the exeption of DG31PR which is a stunningly good VFM board with good OnBoard graphics(GMA X3100)
If you need such a budget, go with Biostar 610i motherboard thats available at 2.2k.
C2D E4600 is not VFM. Its much better to get an E4500 instead. Out of E4400, E4500 and E4600, the middle one is the best.
But the problem is that the E4xxx series is outdated. It makes much more sense to wait for E7200 to hit India at a cheaper price. Its the cheapest penryn.
If you are in urgency, I would suggest you to go with E2160 or E2180(if you buy an intel board).
Even better, get an Abit IP35-E or a Biostar P35 mobo for 5.5k or 4.5k respectively and an E2140, which should serve you well till you ditch the E2140 for a cheap future penryn.