The Arch way of doing this is as follows:
1. Place your script in /etc/rc.d/
2. Chown it to root and chmod 744
3. Add the name of the script in the DAEMONS array in /etc/rc.conf. Mine looks like this:
Code:
DAEMONS=(!pcmcia firewall network archstats)
4. Reboot or start the script by running /etc/rc.d/firewall start (replace firewall with the name of your script if needed).
5. If anything goes wrong, please ask again.
bbs.archlinux.org is good for arch-specifik things.