My users regularly use rsh to run remote jobs. Setup an account with the permissions you want remote users to have. In that account's home directory add a ".rhosts" file in which there are lines with pairs of entries "machine username" for every machine/user combination you want to have remote access. Set the .rhosts permissions to 600. Remote clients can run jobs with "rsh machine -l username your_command_goes_here" using the username you setup for remote access. My users do this to theirown account. The most frequent use is to start a terminal on a developmwnt system and display it back on their NT desktop using "rsh machine -n -l username /usr/dt/bin/dtterm -display ..." with the machine, user and display names filled in.
Not exactly what you asked for but it might work for you. Good Luck!