Well, if you realy 'need' a free software there are also at the moment some options like:

HotkeyNet, AutoHotkey and Octopus.

The first two ones are script based, so if you need a pretty gui, they won't work.
I personaly use HotkeyNet for all my boxing and ify ou need some help setting up HKN best way is:

- look at the sticky: [HotKeyNet] Guide: HowTo use HotKeyNet for boxing
- look at the reference/scripts on hotkeynet.com
- ask a specific question here, so that we could try to get you a working script
(or have a look on this thread:Old rat wanna try new stuff:) , where i recently posteda 2-box script for a user)