I think you will need both the Gemini Driver and Ascom5 platform.
Have a look at this yahoo group posting
http://tech.groups.yahoo.com/group/G.../message/19037
One other thing to watch out for if you are using a USB to Serial adapter, is that often when plugged in the Com Port number assigned can change. But this can cause problems with Ascom finding your mount.
Regards
Fahim