The game is original. I can't play online, the game is installed with the patch 1.1 and convo pack 2.2, i am runing in win 7 64 bit, the firewall don't block the game, the game runs right only the online i can't play, when i go to multiplayer and click in join it freeze the game, then pop ups a window that tell "busy (0%)" and then i see the game list with no servers.
What i must to do?

My pc:
Manufacturer:
Gigabyte Technology Co., Ltd.
Processor:
Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4 CPUs), ~2.8GHz
Memory:
4096MB RAM
Hard Drive:
209 GB
Video Card:
NVIDIA GeForce GTX 275
Monitor:
Asus VH242 24'' Full HD
Sound Card:
Altoparlanti (Realtek High Definition Audio)
Speakers/Headphones:
Logitech
Keyboard:
Hub radice USB
Mouse:
G9 Laser Mouse
Mouse Surface:
200 - 3200 dpi/s
Operating System:
Windows 7 Ultimate 64-bit (6.1, Build 7600) (7600.win7_gdr.100226-1909)
Motherboard:
Gigabyte P31-ES3G
Computer Case:
Chenbro PC61166 Xpider (Gaming Bomb)

check internet connection.

All games work fine online only with this game don't work.

make sure you have the Internet checked in the multiplayer not LAN.

I have the Internet checked in the multiplayer.

well there is a connection problem somewhere. make sure that "search all regions" is also checked.

After it shows you the game list with no servers, try pressing refresh at the bottom.
If that still doesn't show anything make sure about the search all regions under the internet options. If it is checked uncheck it, if it is unchecked check it (sounds confusing doesn't it)
Also we'll make a grand assumption you are using a legal copy of the game right

Yes i am using a legal copy of the game right.
When i click to refresh the screen freeze, then popups the window busy 0 % and then no servers in the list.

EDIT
Sry for double post, i reinstalled the game only with the patch 1.1 and now i can play online, but i dont understand why if i install the convopack the online game block it.

EDIT 2: This topic can be closed or cancelled, i have solved the problem, thanks for the help.