Hi ya all, I know this problem has been discussed numerous times in other forums but I would like to put it here too.. may b some* here hav a solution...I have a cable connection provided by a provider which means I dont have anything with me like router or something else I just have a cable connected to my PC and I am usinf Ethernet Network card thats it.Now my problem is with MSN messenger chat and file transfers , whenever I try to have a voice chat or a file transfer, I get this msg saying "ur connection is blocked u may b behind NAT.."blah blah . can any* pls guide me as to how to solve this problem? many thanx in advance.