You need to edit the ExecTBL.ini file in the RoadRunner directory. Adding "Quit" to the Onsuspend event will do it. There's a text file called skincommands.txt that has a complete list of all the RR commands.
As far as automatically restarting, you want to get your hands on Hibernatetrigger. Just point it at the Roadrunner.exe and you'll be good to go.