Two-key combinations with modifier keys

Question

I can do plain two-key combinations, eg F & G::

but how to do so with modifier keys, say
holding alt-win-F (3 keys pressed) then G (now 4 keys pressed)?

Both !#F & G:: and !#F & !#G fail.

Answer 1

There is actually a physical limitation with some keyboards. Anyway, try something like :

!#F::
Input key, I L1
IfEqual key,g
MsgBox Success!
Return

See the following for more information: http://www.autohotkey.com/board/topic/5408-multiple-letter-hotkeys/