Before you download any program or game to your PC (free or not) make sure that it is compatible with your Pocket PC 2003! If it is not compatible, you'll get an error message on your PDA. when you try to install it. Remember that you double-click the .EXE on your PC first, and know where is it installing. You will end up with at lease one .CAB file and maybe a few other files. After synchronizing with your PDA, tap .CAB and the program will install on your PDA.