Facing reraise preflop with KK (early rounds)

[Smithers]

(Let me preface this by saying I am more or less a lurker, and not as good as most of you).

I was wondering if anyone had calculated EV of pushing with KK preflop in the early rounds after raises and/or re-raises.

Assuming stacks are roughly equal, and, most importantly, the guy re-raising could be any random idiot with a range of hands that random idiots could potentially push with pre-flop.

I generally always push in this situation, but seem to be running into AA more than usual -- can any EV experts either flame me or praise me, please?

Thanks