Need opinion on this barebone system, looks pretty good and looks like it is already DC-DC so should be able to plug directly to battery correct?
I am using an older Delorme Earthmate LT-120. I run Streets and Trips 2K9 on my setup. From what I have seen amongst various navigation and or mapping software is as long as your GPS device software can emulate a serial port you should be able to use any navigation and or mapping software. The main thing is your GPS device outputs NMEA data wich is pretty standard.
A Carnetix regulator.
Read the PSU related FAQs to understand why that is the best choice. There's a link in my signature.
However, those Acer SFF units have a unique problem. If you want to use the shutdown controller, you'll have to do some fine solder work on the motherboard, as the power switch headers on the board aren't made for a jumper, and look like an edge connector, if I remember correctly.
Someone documented it on these forums, complete with photos.
Just wanted to add to what darque said-- yes it is a little harsh, but if you are seriously interested in car computing, you need to learn these things-- because once it is built, you are the one that will need to fix it-- not all posts are answered as quick as you can break something