Originally Posted by 98CoupeV6

Um no, that's not a good idea. You may have noticed that the "cold idle" in P or N is higher than it is when the car is warmed up...this is to warm up the engine faster. Putting it in drive will drop the RPMs down to warm idle even if the engine is cold. And like pimped said, the best way is to drive slowly and keep it below VTEC (if applicable) until the engine is warm.