I'm trying to find out why the bonus link for GWX is redirecting you. It may take a bit. Meanwhile the best place to get a guaranteed correct copy of GWX is to look at any post by Jimbuna and follow the link in his sig.
Commander is indeed available here at Subsim Downloads, if not exactly easy to find.
http://www.subsim.com/radioroom/down...o=file&id=4789