Yes, scripts in "/etc/rc?.d" (? = run level), run in alphabetical order, you can put "dhcp" script (if you want just use the sample script posted here just copy/paste), then give execute perms "# chmod 755 dhcpctrl", for "dhcp" case I think the best for startup is late on level 2, and soon on shutdown in level 0, put "dhcp" script in "/etc/init.d" don't use "dhcp" for script name, because it is used for dhcp server and already exists so if you use something like "dhcpctrl" you can do the links as:
# cd /etc/rc2.d
# ln -s ../init.d/dhcpctrl ./S97dhcpctrl
# cd ../rc0.d
# ln -s ../init.d/dhcpctrl ./K04dhcpctrl
Hope this helps
Regards,
Carlos Almeida,