How to make a program automatically start at startup

From: Gevadas A. Akkara (gevadas_at_yahoo.com)
Date: 12/30/04 

Date: 29 Dec 2004 23:45:17 -0800

Hi

I have made a c executable .I want this program to run automatically
each time the system reboots.

I tried by putting the program in /etc,/etc/init.d,rc.d ,rc0.d
directories. Still the program is not starting automatically .

I am using RedHat Linux.

Thanking You,

Regards
Gevadas A. Akkkara