You'll definitely want Stardock Central if you dont want to wait on a standalone to patch up. It's really not that bad of an application, and it gives you a few other toys to play with
To see your version number, click into the options menu and you should see the Major version number up top.
Barring that, the other way is to go to stardock central, click on drengin.net tab, click on Galactic Civilizations on the list, and click the history link. The history will show you your games version history, and thus the full version number
Hope this helps
SeanB
SeanB