Well, I copied the effects for the Republic jetpack over into my gun/effects folder. Then I copied over the .tga and .tga.option into my gun/msh folder. Lastly, I added the ep3jettrooper's lines that dealt with his flying into the Gungan defender's odf. The result:
How do I make the jetpack visible?

I am aware that there is a topic that mentions invisible jetpacks, but I think my problem is completely different.

The jetpack is part of the republic msh. Someone made a jetpack addon, and then Mav made a cheap work-around for the dissappearing addon msh glitch. I'd get those if I were you.

Thanks. Do you have a link to this jetpack addon? I searched the "Released Assets" forum but nothign turned up. Maybe I searched the wrong forum.