Speed touch Modem!How do i open the closed ports?

[mitsos]

I have a Speed Touch modem (ADSL.384) and when i am trying to play games in the internet i can't.It says that i have some ports closed.Probably this is happening from my modem,cause i do not have firewall.Does anyone know how can i open these ports?Plese help!!!

[fathom0200]

Are you sure you dont have Microsofts firewall activated? Even though i think that only controls incoming packets.

I only say because i also have SpeedTouch and it has absolutely no control over which ports are open on my pc. I use Kerio for that.