let me see if I can answer them Spartan
1. target your tank and type
/macro 65 Complete Healing.
this would put the tank as primary heal, and heal him at 65 percent with complete healing. I belive it defaults to heal tank first, then cleric then rest of group. Not 100% sure on this, as I use a different version of afkcleric and I only duo with it.
2. no chat channels are needed, all comunication is for information only, at least that is the way it is in the one that I use, so I could be a little of on this one.
3. again as far as I know it will default to heal tank, then cleric, then group. so I have never really played with the healing modes. It won't create an ini files, but the macro should tell you how to change the mode - K i just looked into it a bit, and couldn't see how to change the healing mode...someone else will have to tell you have to do this....
4. You don't need any other plugins, but you do need the spell_routines.inc in your macro's folder. Think of it as a library file. when the macro runs it includes this file into the macro itself, and enhances the macro without you having to write the code. you can find the spell_routines.inc all over this web board, just do a search.
I hope this helped with a few of your questions, and sorry I couldn't tell you more....I'm still pretty new at macro's as well.
Donnavan2005
*edited out tanks name - had a brain fart thanks Mithaniel*