keyboard remapping scancodes

PLEASE no flaming about AutoHotKey (I am aware of the "history") - I'm simply trying to do the equivalent in AutoIt and not use autohotkey if possible.

In autohotkey you can remap keyboard scancodes easily
i.e.
sc10B Up::Send {WheelDown}

takes scan code 10B up and maps it to a scroll wheel down.

I can't use _IsPressed because the hexkey starts with 0XFF which makes it indistinguable from other keys.
I can't use Virtual Keys because again it starts with 0xFF.

I've searched the forum and can't find a way to intercept scancodes.
This is the only reference I found and I need what he's asking for.
http://www.autoitscript.com/forum/topic/40092-ispressed-but-using-scancodes/


Any hint appreciated.