Yes, I have never used Multibox before, but have heard positive reviews when it has been used to box networked computers.

Just an FYI, the above script was for HotkeyNet (HKN), rather then AutoHotkey.

Good Luck! As I've said in other threads, WAR is worth holding off on boxing. You will miss out on the amazing Melee classes if you Multibox! (Disciple of Khaine is a new concept to melee gameplay!)