Wow, this was an old post. I'm surprised anybody read/found it
I saw your PM before the post, so have replied already via PM.
Regardless of that, though, here's some info:
I use Navigator 4 (Europe Edition). I think it's good, because firstly, it's quite cheap & secondly, it's got a great "speech" feature, so it just talks to you & directs you, turn by turn. No need to keep trying to see the screen.
As for the IR connection, it's an integral part of the "arm" holder.
The "holder" is like the ones you see for mobile phones. It has a built-in speaker, built-in power supply to both the GPS & PPC, via the cigarette lighter socket, and the built-in IR connection. This IR connection is made via a small "wire" arm that plugs straight into the PPC "holder" and then has a small red "blob" on the end, which is the IR transmitter. This lines up with the IR port on the iPaq. So, there's no actual "configuring" to do for the IR.
I'm really pleased with it & can't believe how accurate it is! It calls out junctions & turns within just a few feet!
I also use it with a Sandisk SD/IO Wifi card. This has amazing power for a "stamp - sized" card. This also adds the ability to use the stumbling softwares with the GPS, for mapping out later a "real" PC.
Hope this is of some help !?
My more recent toy has been a CL series "clam-shell" Zaurus. I prefer to have Linux. I haven't got any GPS for it yet though.
Anyone have any suggestions about that??