[jetlag]

There is also a very good navigatino program called Netropa, it may look a little bit outdated but the programs works like a charm, love it. You can also use it in laptops as well.

Regarding the GPS there is also an interesting device even though it is for laptops only, the Deluo Mouse GPS which can be used either as a GPS or a mouse but not both at the same time heh GPS navigation in phones specially Windows Mobile ones is cool but I still prefer something with a bigger screen. To me 12 or 14" laptops offer the best relationship between features and portability