Please post helpful Macro's for other dual/multi box people. I see quite a few questions so this may help people (including me!!!)

I two box so I have my healer on the second box.

/cast [target=party1target] Shadow Word: Pain
/follow Party1

/cast [target=party1] Renew
/follow Party1

This is the basic template for most of my macro's. You can use a characters name instead of Party1 but I prefer the generic party1 so it will work with whoever I have as the main character.