I would like to put a dual zone system in my 2003 Tahoe consisting of an in-dash controller/monitor and a secondary ceiling mount flip down monitor (22")

I need advice on my build

Intel Core 2/ Centrino MB (mini-itx)
1Gig dual channel ram
Pentium M chip
250Gb 5400rpm HD
Windows XP and RR
GPS

I need to add a 2 channel soundcard so that I can have audio for the rear, it will go into a IR transmitter for wireless headphones that have volume control built into them.

I need a head unit that has dual video output and dual audio input, and a case that I can use the audio card in.

Suggestions Please!!!!