I'm not sure there is a demo version of GML Commander. I believe your best bet is a local Allen Bradley representative. I know they stopped working on updates at least 7 years ago.
Thanks, reason I asked is I have a 1394 servo that I will have to do a small parameter change to. I haven't used this software but have worked with a few other servo programs and was just wanting to take a look before the actual software arrives.
LR