JXPROJECT, ANyone?

I was in need of a very inexpensive (like, free!) project management application for the Mac. I used MS Project at work for a long time, but that was then and I am now no longer in the work force - Yahoo! Anyway, I came upon JXPROJECT which is free and appears to work quite a bit like MSPROJECT. Unfortunately, it is a Java application that works like no other app on my iMac with OS X. I'd like to put this thing on the dock and fire it up at any time. But, I have to go into the Applications folder, find this .jar file, run it , and then tell it to open my project file I last used. Worse yet, I can find no way to associate my project file with that application. Frustrating, to say the least. Have I done something goofy with the installation to cause it to operate like this?

So, I fired off an email to the JXPROJECT support folks. A week has elapsed and I've heard not one word back from them. Evidently support isn't one of their strong suites. If that's the case, I suppose I need to try a different vendor's application.

Does anyone in this forum (1) know how I can make JXPROJECT run lake all the other applications on my iMac, or (2) know if a similar product that behaves like it is supposed to?