[CentOS] centos 6 gdm.custom auto login

Under centos 5 I modified /etc/gdm/custom.conf to
auto login with the following:

[daemon]
AutomaticLoginEnable=true
AutomaticLogin=myuser
TimedLoginEnable=true
TimedLogin=myuser
TimedLoginDelay=0

This doesnt seem to work in Centos 6.
What is the new way to accomplish auto login under X11.

Thanks,

Jerry