Hi, I have a problem join to a game hosted by a friend, i'm able to join any other game hosted by anyone but with this firiend the clock that counts the time it has to connect to the game runs out, perhaps it's happening because we have almost the same ip address (the both starts with 201.233.xx.xxx), please can anyone help me to fix my problem.....thanx

Are you sure that other people can host your friend's game?
The IP's second digit, in most cases, is a too high level to be considered a network, the only thing I can find out from this IP range is that you have a brazilian IP or you use a brazilian proxy..

here is the thing..... if i host a game everybody can join it except one friend....the one that has almost the same ip address and viceversa, and no i'm not brazilian....am colombian

Perhaps you should contact your service provider, it might be their problem.
Your provider probably has a server in Brazil, because all IPs starting with 200 and 201 are supposed to be brazilian.

did both of you try disabling your firewalls?

yeap we already try disabling firewalls and still don't work and i call my is and they said that we have dinamics ip but our ip address is always the same........

yeap we already try disabling firewalls and still don't work and i call my is and they said that we have dinamics ip but our ip address is always the same........
If your IP is a dynamic one, this might be for you:
http://www.no-ip.com/services/managed_dns/free_dynamic_dns.html