Inimicus: Catch up with me while I'm entertaining next to the Orgrimmar AH, I'll gladly tap my macro for ya.

IT Monkey: Click on the Trinity minimap button, and then click on the bottom button that drops out. Next, right click a button on your bar, and it will change types. If it doesn't already, right click till it says "Macro". Then you should see a place in the config pane for you to type the contents of your macro. This macro will not use one of your macro slots in the macro menu, and it seems to have no max length. (My constantinople macro has 18 lines, for example)