Here are the final computer specs and prices:

VIA EPIA M10000 Mini-ITX Mainboard ($150 - Mp3car.com)

512MB DDR RAM PC2700 184-Pin DIMM Memory ($95 - Mp3car.com)
60GB 2.5" ATA-6 Notebook Hard Drive (7200 RPM) ($95 - Newegg.com)
Slot Load DVD-ROM/CD-RW ($80 - Mp3car.com)
OPUS 120 watt DC-DC power Supply ($93 - Mp3car.com(
XENARC 700TSV Monitor ($365 - Ebay.com)

Also bought:

Notebook HD to IDE Converter 2.5" to 3.5" ($10 - Mp3car.com
Slim CDROM Adapter ($7 - Mp3car.com)
Bluetooth USB Link ($20 - Newegg.com)
GlobalSat SiRF Star III USB GPS Receiver ($70 - BuyGpsNow.com)
OEM Lexus Nav Housing ($150 - Lexus Dealership)

The total damage: $1135
(which is what is expected for a full working computer and LCD touch-screen)

As for the software, I'm running:

1) A lite (stripped down) version of WinXP. It loads in under 30 seconds (from hibernation) and is beautiful.

2) I'm using RoadRunner as my front end with modified skin of Simplistique.

3) iGuidance - which works perfectly! I originally had Microsfot Streets and Trips, which absolutely blows! The GPS Mouse that comes with it is horrible and I hardly got a Satellite lock. Even if I did, the program is just horrible. It's more of a mapping program than it is a nav system. After buying the Sirf III GPS receiver and iGuidance, I never lose the lock and it works without a hitch! I HIGHLY recommend this!

4) Winamp since it integrates every-so-nicely into RoadRunner

OK....ok, now onto the install