1. Windows Mobile uses a slightly different API than that found on Windows XP 2. Most mobile devices use a totally different processor than those found in desktops, making a simple wrapper...
As Microsoft has already made Windows Mobile 6.5 official, most of the current mobile users with WinMo 6.1 are eager to know if they can upgrade their devices to Windows Mobile 6.5 or not....
No, the Droid will not run any version of Windows Mobile. The hardware is incompatible. That said, I was a Windows Mobile user, and I am finding the transition to the Droid fairly easy