Looking for Dualboxing method


I'm looking just for a simple dualboxing setup for wow and someone I play with directed me here saying this is what he used. But since I'm also just dualboxing I don't know if I should just use something simple and free like AutoHokeyNet. Is there any 2/3 day trial so I can figure out if there is any reason to purchase this instead of just using what I've got which at the moment crudely works.