Just go to www.jazzjackrabbit.com and download the jj2 1.20 => 1.23 patch. Then patch your jazz. Remember not to modify any of jj2 files before patching or you will have to reinstall your jj2. Then either replace your old jazz.exe with the new one you downloaded or download the list server patch. Either will suffice. But I did both. You should be able to pick server lists then.