Hi there Shanks, welcome to the forums!

I'm not actually going to be able to answer your question as I don't use AHK; because when I starting to multibox, I looked at the AHK configuration file and cried. ;(

But I can give you some suggestions for some alternatives that I think are easier to configure, should you be willing to try them out.

Keyclone - This has some minor costs associated with it, but comes with a lot of useful features for wow and there is an abundant of information available on how to configure it. The author of keyclone is active on these forums.

HotKeyNet - This one is currently free, also has a lot of useful features for wow, and the author is active on these forums as well.

I personally use HotKeyNet - there is a quick start guide , some rules for wow and a wow forum .

In HKN you label your World of Warcraft windows, so label your main window, MainWow and your hunter's window, HunterWow.

To get your r key to work so that your hunter steps backward (hold r down) you would use the following:

Code:
<HoldDownKey r>
<PassThrough>
<SendLabel HuntersWow>
IMHO 3 lines > 15 lines of code

Anyway, if you have already evaluated these two options and chose AHK, I'm sorry for wasting your time.

As an aside; I'd say you posted this question in the wrong forum; you probably should have posted it in, New Multiboxers & Support .

Good luck with your multiboxing adventures...