Setup an ssh-public key?
First
# ssh-keygen -t dsa
on your computer. Then
# scp .ssh/id_dsa.pub remotecomputerip:".ssh/"
Then on the remote computer:
# mv .ssh/authorized_keys2 .ssh/authorized_keys
# cat .ssh/authorized_keys .ssh/id_dsa.pub >.ssh/authorized_keys
and you should be done.