NEED HELP WITH CHANGING FACE GRAPHICS

Ok, so I didn't really have a lot of room in the title to explain what I meant perfectly. I know how to change face/actor graphics in game and for text, but I'm looking to find a way to make it a bit smoother for my game. I use RPG Maker VX Ace, and when putting in a text face graphic the only way I see of doing it is on the <Insert Text> option. This would be fine were I making a classic RPG where characters used preset graphics, but one of the core features in the game I've been designing is a fluctuating Graphic/Class system for each of the characters that's met over the course of the game (hidden variables changed by player actions alter the graphic/class when the actor is met in game, out of LoS). From what I've seen, there's no way to "associate" text to a character and have it automatically insert the character's face graphic. Does anyone know a way (or script) that I might have missed in my searches that can do this for me, or am I going to have to crunch conditional branches depending on each actor's class for all the game's text?

Sorry for the fast double-post. Pockethouse is no longer a listed domain name. Do you happen to know of any other links to the SwapDummy files offhand? I'll go start searching now just in case you don't though. Thanks so much for your help (again)! :)

Awesome, thanks! I'm watching some tutorials atm on how to put in scripts so I'll let you know how it goes when I'm ready to give it a shot! Thanks!