File Access on linux

I have a script that I have written that uses ipchains to shut down and bring up our firewall. As a normal user, I cannot use this script because I don’t have access to run /sbin/ipchains. As root of course I do. I don’t want normal users to be able to run the /sbin/ipchains program by itself, but I would like them to be able to use the script I have written, which in turn uses ipchains. I am a somewhat new to unix and am not sure how, or if, I can do this. Someone told me the by setting the ‘sticky bit’ I could accomplish something like this. Thanks for any help you can provide. Also, if someone could clue me in on how the sticky bit works I would appreciate it.