I get Apprentice installed just fine, but when I attempt to install the non-commercial licenses I am told I have an invalid hostname. I previously fixed this by changing my hostname it from localhost@localdomain to something@something.com. That was simple enough in Redhat 8, but under Fedora Core 1 I can't easily change my hostname. When I use the normal methods, X windows won't even display properly. Nice, huh? This is probably a Fedora problem so I'm not going to bug you guys about it too much, but is there any workaround you can think of? Even getting a license from the server manually doesn't work since it says localhost@localdomain is an invalid hostname. Thanks for any help.

No, I'd suggest you search how to properly change your hostname on fedora.