First you need to enable java content:
>Go to program files / lgcontentsbank and edit config.ini (make sure to create a backup first)
>change EXIST_JAVA=N to EXIST_JAVA=Y
>change MODEL_NAME=xxxxxx to MODEL_NAME=KG800
>then under program files / lgcontentsbank / contents create a new folder and name it "Java"
>Copy your jar and jad files to the Java folder.
>Now edit the jad file using notepad and add: MIDletX-LG-Contents: KG800 to the end.
Now open up your LG contents bank software, there will now be a JAVA option along with picture and melody. Establish a connection with your Chocolate phone and transfer over to install.