I've helped a couple of people with this, so I just post the solution here too.

open movememory.lua in a text editor.

Change the line of code:

"setkeystate=0" to "setkeystate=1". Then save the file.

start toribash up. load movememory.lua with "/ls movememory.lua" now the first button you press will be the new menu key (it can still be F1 if you want). Press your chosen key. close toribash.

open up movememory.lua again in a text editor, and change "setkeystate=1" back to "setkeystate=0".

Voila. Name your firstbornes after me.