I am thinking of putting a dvd player in my car and a screen but i dont know if my pioneer deck will hook up to it properly, so i saw this fm modulator on ebay
http://cgi.ebay.com/ws/eBayISAPI.dll...742323211&rd=1
how weel do these work, specifically audio quality. I don twant to have to use a splitter for the audio to my amp so this could work, What are the opinions on this product or similar ones?

The quality on that one should be fine...especially for your application (I mean its not like you need competition-grade sound to play DVDs)

The ones to stay away from would be the "wireless" FM modulators.

they worrk really good

How do these work? You just plug it in and set your tuner to whatever station it calls for? Do they have a lot of distortion or interference?

yup and you connect it to you ant and a power source and the audio source such as a DVD player