I am currently thinking of getting those small programmable 10 key keyboards just for volume control and for basic keys to access bios if this idea fails.
For the keyboard to communicate with the logitech receiver I was thinking of actually using an old logitech wireless keyboard an replaceing the BT chip in my keyboard with the one in the logitech keyboard. Do you think that would work alright or would that involve some programming issues which I would need to flash some kind of software into it.