well, the software I use on the ipaq 3660 (PPC2002) is tomtom navigator 2;
http://www.tomtom.com
Complemented with an haicom GPS receiver.
the receiver is good, got normally at least 6 to 8 sat's tracking me.
I suppose you can buy the complete kit which includes software, car holder and a Leadtek GPS receiver. don't know if it'll work in the USA or Canada though, I'm the Belgian dude, remember :p
ah just so you know, the kit costs about 500 US$, Ipaq or similar pocketpc not included that would be another 500 US$
btw, thanks for that plasti-dip link, I"ll look into it.
I want to be able to drive in the rain