New 01 passat v6 Navigation

Hey im new to the VW craze, im actually a DSM tuner, lol. I have a 96 gst for sell, but thats not what im here to talk about. I Bought an 01 passat, I swear its an 02 body, but I dont know it has the projector headlights, But it didnt come with Navigation. IM wondering what all do I need to buy for navigation, like i know the main peice, but do the AC controls, and everything else still work, what harnesses do I need, and does anyone have one laying around for sell? Thanks guys, i knw how the AF forums do wonders!