OpenSolaris - Autologon
There are two ways to setup the auto login for OpenSolaris (2008.11);
One - You can fire up the GUI using gdmsetup. Update : this didnt actually work when i tried it recentely - it might not be in this release of opensolaris.
Two - go to /etc/x****11/gdm/custom.conf (in newer releases its just /etc/gdm/custom.conf) and manually modify the required fields in the [daemon] section and add the following;
[daemon] AutomaticLoginEnable=true AutomaticLogin=username