From Spb Software House:
EzSetup is a free application for creating installation programs for your Pocket PC. The installers created by EzSetup are very intuitive for end users; they are applicable to any Pocket PC, and users don't have to worry about choosing between several installation files. The EzSetup installers are always provided with customizable readme and license agreement sections. The installers are compressed, self-contained, self-extracting and can be created in several languages.
EzSetup is a command line application with some parameters keys. If you want to create an installer of some program for a Pocket PC you just run EzSetup with desired parameters, and it will provide the .cab, readme and license agreement files. EzSetup will create an .exe file, which can be copied to ActiveSync for installation. Version 2.1 features a better keyboard support and fixes a command line uninstall bug.