My 97 dodge interpid idles way to high.can u tell me how to idle it down. and tell me where to look.

I would try looking under the hood for a vacuum leak. with the engine running try to listen for a hissing sound, or if the engine is to loud to do so look around at the rubber vacuum lines and see if any are dry rotted and or cracked. If everything looks fine it could be the Idle Air Control motor mounted next to the throttle body, hopefully you don't have a cracked intake.