Depending on the PDA OS there is a range of programs to run on them. From Route 66 to TomTom... however like i said depending on the version of OS it will mean v5 of tomtom or v6. I know sites where you can get them for free as long as your card is big enough, also got the latest cameras and maps.
Any chance you could PM me some of these sites?
I've got a HP iPAQ RX3715 with a seperate bluetooth GPS device, and i downloaded a certain version of TomTom
However, it always randomly crashes! As you can imagine, when you're trying to navigate somewhere and you cannot pull over, and TomTom decides it'd be a good idea to crash, it really drives you nuts.
Basically all that happens is, the application just dissapears in a split second and i'm returned to the 'home screen'.
One thing i did notice is, when this happens, if you try and fire it back up, as soon as it realises where you are again, it crashes again, so, it seems that it's just certain areas on a map that it doesn't like. If i drive for a few minutes and try again, the application then works. Bizarre i know.
Tried downloading a fresh copy in case the map was corrupt, but made no difference. Also the map is quite outdated.
If there's a new version that would work with my Windows Mobile 2003 PDA i'd really like to hear about that!
As for recommendations, i've never used any of those PDA's, but i bought the iPAQ thinking the same as you, as it's much cheaper than buying an actual tomtom device. I'm not sure whether it's my PDA that's the problem, or whether TomTom is quite buggy, so i'd love to hear how you get on with it if you choose to get a PDA. Mine has a fairly decent spec and plenty of memory, so can't see what the problem is..
Good luck!