Can I use maps from other GPS apps like Route 66, TravelBook, Map&Guide, Autoroute 2004 etc.? If not direct is there way to convert them?
No you can't directly. No conversion program I know of right now unless you write one
AMD XP 2600+/512MB RAM/120GB hard drive
Opus 150W/DVD/GPS/7" Lilliput TS/802.11g/Bluetooth
-GPSSecure- - GPS Tracking
-AltTabber2.2.2- - Handy touchscreen utility.