need help with lost connections

[elesde]

Okay, i have a server set up and both of my computers can connect fine, its just that when i start a game either both or one of them loses the connection, i looked at the server log and it says it is because of a ping timeout, i have no idea what that is, im sure it isn't because of the type of connection i have because they both have little to no ping at all. what could be causing the lost connection?

[elesde]

im sure at least one of you know what that means.......

[elesde]

mmmmkay, well im running 1964 and mario kart 64 is working fine but it when i load conkers bfd it seems to lose the connection, i can play single player fine with it but just when both computers are loading it the connection is lost, is there something i can do to fix that?