The game won't start. :/

Ok, I downloaded the game for 2nd time since LOT of time ago.
I got a netbook, so I decided to download Crossfire.
When I open the client, and press ''Start'' the Xtrap starts and loads, BUT THEN, a black screen pop's up, and nothing else happens, it just freeze in there.
Sometimes the game just stay in the taskbar and it says that is not responding.

Someone haves a solution for this problem? My computer is famous for not working with MMOFPS games. ._.