I just wanted to let anyone know who may still be having trouble installing RubyCocoa on their Mac's running OS X Panther edition that I found a link to download a binary version. You can download the disk image at the following URL.

http://homepage.mac.com/kimuraw/archive/RubyCocoa-0.4.1-panther.dmg

I hope this binary installer will help any of you out there still having trouble.

Cheers