So I just purchased Crysis 2 on eBay but I now just found out that it's the EU verson and not the USA version. Are there any differences between the EU and USA version? If so what differences? I still haven't opened up the game yet. 

I'm not sure if this is a newb question or not, but I'm new to the gaming world and I'm wondering if my laptop can play Skyrim on Ultra settings? It has the ATI Mobility Radeon 5870 graphics card with 1gb ddr? video memory.