Calling a Macro

Hello,

I was wondering how I might call a macro using gobetwino or arduino? I have a macro written to navigate through excel and now I would like to call the macro if certain parameters are met. I saw on another thread http://forum.arduino.cc/index.php/topic,45471.0.html that this could be done, but I am not sure exactly how to go about it. I currently have gobetwino calling the macro using Sendkeys and the keyboard shortcut associated with the macro. However, I want to eliminate this command as it is unreliable.

Any ideas would be great. Thanks!