Radiance export script update + GUI

I have finally gotten around to writing a GUI (however simple it may be) to the Radiance export script. I have fixed a few bugs, and hopefully not made anymore. I would appreciate the input of some Unix users, I’m not sure if the .sh files work or not :-?. It should be more user-friendly than the old script. The download links are here:
http://mywebpages.comcast.net/rayae1/tutorial.htm