1) Windows XP: "Version" tab.2) Windows 7: "Details" tab.
There you will come to know about your version...Most probably.
Try right clicking your main game exe, go to properties, and then look for:-
I have the same question, and several times wanted to ask, and tried what you said HG but didn't find anything.
[Edited by Evanscense, 6/1/2010 9:40:06 AM]