AppForge MobileVB is mobile application development software that integrates directly into Visual Basic 6.0 enabling developers to write mobile apps in the Visual Basic programming language. These apps then run on over 90% of the world's handheld, mobile, and wireless devices. MobileVB supports Palm OS, Pocket PC, and Symbian OS (Nokia Communicator) devices.
More info:
hxxp://www.appforge.com/prod/af_prof/index.html