Hello fellow Canadian citizen and welcome to the forums.
Scripting is done in jscript. You can use your own editor; but the integrated one does a decent job for starters like you and me.
To learn how to start, check the scripting documentation which you find here :
http://www.msgpluslive.net/scripts/index.php?act=view&id=13
Goodluck!
Edit : no problem.