I just discovered and tried something new on my BlackBerry and I thought I would share it with you all. If you transfer a JAR (JAVA) file to the media card or memory of your device using either mass storage mode or desktop manager you will be able to install the file from your BlackBerry. This is very useful for people who do not have data plans or have a MAC and want to install JAR and Java games. It is now very easy to try out the many free games at GetJar.com by just copying them to your memory card. Just follow the instructions below once you have moved the JAR file to your BlackBerry. I have tried this with COD files without much success but maybe… Keep in mind that you only need the JAR files. The JAD files are of no use to you.
Open the media manager and click the menu button:
Then select explore and find the JAR file on your BlackBerry
You then click on the JAR file and you will be shown the installation prompt just like you would if you installed the application OTA