How to create user start-up scripts

I want my Suse 8.1 system to execute a simple user defined shell script after runlevel 5 has been reached. This script will hdparm -y one of my drives and set the time using ntp npt.servername. I know that you can use boot.local in the /etc/init.d directory. However at boot time there is no network yet so ntp doesn't work. I also read about the skeleton sample script but as I understand it, it is only useful for starting daemons and not for single commands. My question: where do I put a user start-script that will be executed automatically after runlevel 5 has been reached. Thanks. Jeroen from Amsterdam ~~~~~~~~~~~~~~~~~~~~ check www.21exposed.net