Hey Hot Rod,
Thanks for your "long" intro post. Actually, yours was one of the best newbie posts that I've seen in awhile; you outlined your carpc hdwe, some hopes and plans, and intro'd your ride to the folks.
Good for you, it's a lot of fun.
I came up similarly: read a lot of posts and got some sort of an idea of just what I wanted a carpc for. It's like the old story; a person feels the need to put together a PC, then wonders why they did it (good way to pick up their barely-used PC for cheap!).
I basically wanted LOTS of music available in my car, so using WMP ripping as .wav files onto a 500 GB HD, I got great-sounding music ripped from my own cd's.
I have GPS, but basically MapQuest most of my trips and do ok with that; but it's there if I need it.
I DO use the internet a lot in car for research as I go from town to town, e-mails, etc.
I use bluetooth for dial-up thru my pocket PC phone, and have wireless card for when I'm in my driveway, or wherever I can find high-speed...
The "WOW" factor is always fun, too...
See you around the forums. Best of blessings and success on your (sweet) truck and carpc endeavors.