1.Extract the .jad and .jar files from the .zip file.
2.Using your favorite archive program (ie. WinZip), open the .jar file.
3.Here, you can add whatever Midi's that you would like on your phone to the archive (.jar file)
4.Save the .jar file.
5.Edit the .jad file using a program such as NotePad.
6.Change the line that reads:
MIDlet-Jar-Size: #####
and replace the numbers with the file size of your new .jar file (You can find this number by right-clicking the saved .jar file and selecting Properties)
7.Save the .jad file
8.Using JAL Lite, load your saved .jad and .jar file into your phone.
9.Go into the JAVA section of your phone and install the new program.
10.Run the RingTone program on your phone to install the Ringers.