Paul [Microsoft MVP] at Modaco has released CABviaActiveSync which was earlier available only for Modaco Plus subscribers for public use. This software allows you to right click on a CAB file (the executable file for Windows Mobile) on the desktop itself and click install. The file would then be copied/parsed to the Activesync directory, installed on the Pocket PC and remain in the directory for future install/reinstall. Saves the hassle of copying and pasting a cab file to the device and then installing it.

Via Modaco