http://www.pocketgamer.org
is a good website to find links or downloads to nearly every game available for the PocketPC.
To install a game onto your PocketPC, you must (1) locate the game you want, (2) download the install file off of the game's website. Make sure you download the version that works on your PocketPC. If you have an older Jornada, such as an HP 548 or below then you'll need to download the SH3 version of the game, or the install file that says 'for all PocketPC2000 (WinCE v3.0) devices.' If your Jornada has a higher number than 548 then you have a PocketPC2002 device and you'll need to download the ARM version of the game, or the download 'for all PocketPC2002 devices.' (3) Remember where you downloaded that install file to. It should either be a ZIP file (which can be opened with
http://www.winzip.com) or an EXE file. Simply run the file that you download, AFTER you have turned on your Jornada and connected it to your PocketPC through the provided Sync Cradle. (4) Follow the install procedures, ActiveSync will start on your computer and transfer the files to your PocketPC.
Viola, you just installed a new and entertaining game to your PocketPC