You need it to start the script with e-smith which is at run level 7.
So for example in /etc/rc.d/rc.6 so you will proabaly see a soft link to the /etc/rc.d/init.d Postgres script.
instead -
Make a softlink from /etc/rc.d/rc.7 directory to the init.d startup script and it will start automatically with e-smith.
Justin.