Should be good. I'm assuming you mean at idle with the stock heatsink.
You might want to take the heatsink off and reapply some new thermal paste though. An aftermarket heatsink will cool it down considerable if you want, but I think those temps are fine.
C2D E6600 | 4GB DDR2-800 | 9800GTX+ | Asus P5B-E | 150GB Raptor | 320GB 7200.10 | 750W Xigmatek PSU