Pretty sure what he is asking, is a similar program that we all used for Everquest for years, where on your main account you could give in-game text commands that you set-up for the other toons to follow IE: /heal- would make the priest heal me while I was playing the warrior and so on.
GordonGekko if you are still in need of something like I described you may want to check out this site.
MacroQuest :: Index I have used it for roughly 5 years now and can vouch for it being an amazing program. though it takes quite some time to set things up, once there you can log on an entire raid and minimize them (raid meaning whatever your PC can handle :P) and bring up you main toon you will be playing, to get any of them to do anything just simply set a macro up saying "joe: Heal %t or replace %t with a name" this will make char joe heal %t, also there are assist to make a toon attack your target with a HP % to start at and a follow range to that target. possibilities are close to endless.
**** Like all programs of this kind, the threat of account BAN, is always a possibility, so use common sense when using these programs...