[Wlug] ssh

Hi, When i pop my mail i create a tunnel through ssh, and pop through that. Using this command "ssh -C -f me@pop.myserver -L 10110:pop.myserver:110 sleep 30" Well every time i create the tunnel i have to enter my password for the pop server. Is there a way to use ssh tools so i don't have to enter my password? I'm using kmail is that's relevant. Thanks, --Brad