vviigggee

Hi, when I try to join some servers I get an error message saying "connecting failed". I have searched for hours but not found a solution that works. I have portforwarded and done all the stuff in the firewall, and I have also tried the cmd thing but none of it works. So do anyone have an answer, it would be nice if some dev adressed this since I have the same problem with arma 2 and OA. Is it my modem perhaps, I have read that thompson modems might cause problems.