ssh and rsh

["Chen, Douglas" <Douglas Chen Micrel Com>]

Hi,

My group has a segment of network with combination of Linux  (Redhat 8.0) and Sun sparc (Solaris 8)
behind company firewall. I was hoping to write a script to submit simulation job from Sun to different
Linux box but failed because rsh is disabled in Linux and ssh required password which make the script
harder to be used by everyone in the group. I have tried ssh-add, ssh-keygen with no luck.

My question is 

How can I enable rsh so I can run the script? I believe the security shouldn't be an issue since all
the systems are behind the firewall. or is there any other way that I can submit remote command
without password being asked?

Thank you very much for your help.

Douglas