If you decide to use Commander with GWX, then you'll also need some additional cfg files which you can get at the GWX download location here:
http://www.users.on.net/~jscones/GWX/
Instructions should be in the manual which you can also get at same location.
Here is the latest release thread for Commander:
http://www.subsim.com/radioroom/showthread.php?t=101815
Here is the documentation for Commander:
http://www.users.on.net/~jscones/sof...dr%20Help.html