Help with simple mouse movement macro

[Dramacydril]

Hi to all,

Im new to the quick macros program but i dont understand it yet. I need a simple macro for my mouse.
I need the mouse to move very fast LEFT RIGHT LEFT RIGHT with movement. Just move your mouse from the left of the screen to the right and back but a infinite times so i wont stop moving leftrightleftright.How do i do that?

Thanks