I bought two copies of EU because Me and my husband each have a computer at home. His copy is NA Bought at The Mall and mine???? I dunno, (I bought it on EBAY from someone in RUSSIA but it seems to be a good original game, not a copy) Now, his game takes NA upgrades and I don't know what to use. If I try NA I get the message that EU is not installed. IF I try UK, it seems to install but when I try to run it, I get "EU CD not found", The Benelux upgrade is the same prob as the UK. How do I know which version I have? also, why does my version have a link to Paradox and his has only a link to Strategy first? (I noticed because Paradox has 1.10 while Strat.1st is still only offering 1.09)