Tom Tom Navigator 3 with PDA ..... Software?

Sorry to sound vague, what I was asking was, if I have a Tom Tom Navigator 3 GPS & a PDA, can I use any mapping software, or am I limited to using only the Tom Tom mapping software, which I don't have.

No worries - my mistake - from what I can figure you have a GPS (which just happens to be a Tom Tom Navigator 3 GPS..they all do the same - output NMEA data) and a PDA....the PDA is therefore the defining factor. What PDA do you have?

DiscoverAus does not work on PDA's ...but OziExplorer (CE version)does - but there are some limitations - from Ozi website

PDA's Supported

Handheld - HPC (CE version 2) , HPC Pro (CE Versions 2.11,2.12) , HPC 2000 (CE version 3.0+) and CE.net versions 4.2+
Palm sized - _Permanent_Painted_Coatings.aspx (CE version 2.0 and versions 2.11,2.12)
PocketPC - PC2000 (CE version 3.0+)
PocketPC - PC2002 (CE version 3.0+)
PocketPC - (Windows Mobile 2003) PC2003 (CE version 4.2+)
PocketPC - (Windows Mobile 5.0)
ARM , MIPS , SH3 , SH4 , and Intel PXA2xx cpu's (Xscale) are supported for all platforms where applicable.

OziExplorerCE will not run on

PDA's using Windows CE version 1.
Handheld, Palm sized and PocketPC CE PDA's using AMD cpu's.
Palm Pilots and any other PDA not using the Pocket PC / Windows CE operating system.

There are a quiet a few other GPS mapping programs that work on PDA's so your biggest problem will be choosing which one..and finding appropriate maps to use. OziExplorerCE is probably the best known/supported...can not see a reason not to use it if it suits your purpose.
Cheers
Greg

Thank you very much for your help, PDA is a Dell Axim X5.

Dell Axim X5 - looks flash! If you wish to give OziExplorer CE a go just download and install - unregistered version works with a few "niggles". Like most programs there is a bit of a learning curve! . By the way you actually need the PC version of Oziexplorer to gain full use of CE version.
Cheers
Greg