Since someone mentioned me I guess I should chime in here.....
I have been running a laptop in my FJC almost since the day I got is a bit over a year ago...
http://www.jeniko.com" onclick="window.open(this.href);return false; is the best mount for the money...I used the drill a hole model but they also have a universal seat bolt mount that works...the price is unbeatable!
I have run a toughbook...too heavy
I have run a Fujitsu lifebook....too small and slow (used older model)
Now I have a Toshiba U-205 and it rocks...bright screen semi rugged and runs great.....
Honestly after 2 laptop test I really don't think you need rugged laptop if you are willing to clean the dust after each run (inside the computer)
Software....
Oziexplorer has a complicated look but you really only use a handful of buttons and in normal use maybe 6 buttons out of everything...
Nice thing is the maps are free for the entire USA down to 24K (better than the 100K of Nat Geo), aerial photo and lots of other options...
Basically if you can scan a piece of paper and know 3pts then it is a map ozi can run.
I just down loaded all the maps for my Canada to Mexico Continental Dvide Expedition for free...11gb for the topo, and if I had to buy it per state like Nat Geo that would be $700 (7 states @ $100 ea)...
I would be happy to writeup how to download and setup the maps...once you have done it then it is nothing....seems complicated but not at all...
In use I run a globalsat gps puck for $40 that rocks...
www.semsons.com is where I have bought my gps stuff for years now...
Lastly I use Iguidance for street nav...works well...
and then GPSgate to share my incoming comm port info between the 2 programs
http://blairsite.com/Gallery/Expedition-Ready" onclick="window.open(this.href);return false;
has a pic of my interior