KNOW HOW TO MAKE A HEALTH BAR ON RPG MAKER 2003?

Hey, i know it's a bit of a Noobish question, but can anyone tell me or give me a link to a tutorial that will give me instructions on how to make a Health bar (showing the health of the hero, obviously) that will show up during my game? For those who have played Ahriman's Prophecy, i'd like to make a Health bar like that. Btw, i have RPG maker 2003.
Just so you know, i am familiar with Variables, Common Events and Switches.
Any help AT ALL would be greatly appreciated!