wine users - Nov 2010 - Civilization V with Ubuntu 64 Bits

Hello,
I need some help :

I'm new to linux as i installed it recently :)
I installed Wine 1.3.7,then installed Steam and downloaded Civilization V

It runs fine but when i launch a game it stays on loading screen forever

I don't know how to provide more info on my setup 

Any help appreciated 
Thanks

Nobody?