Icon Launcher + .jar file

[NoOp]

I am having difficulty running a .jar file from a Gnome desktop icon
launcher (Ubuntu 7.04 ubuntu-desktop).

I can run the program by double-clicking the programname.jar file in
Nautilus (user status) in the programs directory, but if I create a
desktop icon (right-click on the desktop & "Create Launcher") I can't
get the program to run.

The program is JavaScore: http://www.gromurph.org/javascore/
If I use Nautilus to go to the installed directory, in my case:
/home/gg/javascore/ and double-click on JavaScore.jar or right click and
 allow it to open with Sun Java 6 Runtime the program runs with no
problems at all. However, if I attempt to do the same from a created
desktop icon launcher that points to /home/gg/javascore/JavaScore.jar I
get nothing. If I try from a terminal I get:

$ /home/gg/javascore/JavaScore.jar
/home/gg/javascore/JavaScore.jar: line 1: PK: command not found
/home/gg/javascore/JavaScore.jar: line 2: d�: command not found
/home/gg/javascore/JavaScore.jar: line 3: �d�8�M: No such file or
directory
/home/gg/javascore/JavaScore.jar: line 4: syntax error near unexpected
token `�G�:�d��'
/home/gg/javascore/JavaScore.jar: line 4:
`�b^(�G�:�d��&��N����.��{�鸤z��k���z��4�4٭Vf�l����9�X�b7����
 ��,��?y-*�J�_PK'

Any ideas on what I need to do to run from a desktop icon or from the
terminal?

G