Key detection in the Keydown event on Win7

How do I distinguish between the Ctrl+a and Ctrl+Home key strokes in the keydown event of a user interface control item? Both yield the chr(1) value for the Key string argument of the event procedure.

Rgds, Gerard.

If Keyboard.AsyncKeyDown(&h73) Then ’ home key
Page_HOME
Return True
End If

Yeah, that makes sense. Thx.