TransAm,
Regular button work in both normal and shifted modes, until you re-program one or the other with keymoves, etc. For example, if you program a keymove onto the PLAY button, you can still get to the original PLAY function by hitting shift-PLAY.

So, I would imagine that this is also true of the device buttons. So, try programming a macro onto DVD, and I would expect that shift-DVD will still work the way you wish.

Rob