That works pretty well, thanks Selae
The hotkey buttons are actually a hair larger, two pixels or so all around, than the buff icons, but it's cool. It looks as if the empty hotkey button squares are the same size as the buff icons, but they're spaced apart, with the actual hotkey buttons fitting flush with each other on top of them.
Anyways, I appreciate your time in responding to my request. The UI community has always been my favorite EQ clan.