I had problems with the keys being recongized from the G-13 keyboard setup to the game. I went into the multiple layout setups for all the default game names, and deleted all of them. Only one I left was the default. From there you can still setup 3 different keyboard layouts from setup 1 2 3 (3 buttons that lets you setup different keyboard configs). Button1 my PVE leveling Multibox, Button2 my Main for Raiding, Button3 for solo instance multiboxing.

Basically all I did was used the G-13 as an extension of my normal keyboard. I don't setup any macros because the response seem slower. I use the joystick as A S D W for my character movement. Use the CTRL A S D W to broadcast the key config to the rest of my windows of WoW to move them all at the same time. 1 thru 0 - = for the other keys.

Good luck man.