[Cableguy]

It is already posible to run any spb file on the device with the device IDE interface....wich is included in the insstalation...
Just copy the file to a known location on the device and run it...It is also possible to program on the device or to do it half by half, coding inthe desktop and the device and have the file synced with active sync...
Microsoft already has a few Windows Mobile emulator, that will allow you to run you app in the device, even if you don't have one...