Its not worth it IMO. Just go to this site
Code:
http://www.wowwiki.com/Multiboxing_software#AutoHotKey
And download Autohotkey. I litteraly just downloaded it and got all the key's I needed to set up, set up in 5 minutes. Just copy the code they give you, replace all the 2's with the key you want to use on both WoW's by clicking once, save it as .ahk and Run it. I'll help you with it if you need.