add script to boot
cp <script-file> /etc/init.d
ln -s /etc/init.d/<scriptfile> /etc/rc.d/rc5.d/S50<scriptfile>
ln -s /etc/init.d/<scriptfile> /etc/rc.d/rc5.d/K50<scriptfile>
The S50 is to tell the system to start the script when it boots up,
the K50 is to tell the system to shut down cleanly when you do a shut down.
The number representates in which order the script should start/shut down in. This way you have the possibility to explicity start your server after like when you started networking and other servers that is required by your server.