Why not ask the player to bind the command key to a button of their choice?
I think that'll just make things more complicated than they need to be
ScreenshotsWeye Shophttp://i390.photobucket.com/albums/oo346/InsanitySorrow/Pet%20Shop/ShopWeye01.png
http://i390.photobucket.com/albums/oo346/InsanitySorrow/Pet%20Shop/ShopWeye02.png
Chorrol Shophttp://www.invision.tesalliance.org/forums/uploads/1264882098/gallery_378_5_438296.png
http://www.invision.tesalliance.org/forums/uploads/1264882098/gallery_378_5_358482.png
Leyawiin Shophttp://www.invision.tesalliance.org/forums/uploads/1264882098/gallery_378_5_744941.png
http://www.invision.tesalliance.org/forums/uploads/1264882098/gallery_378_5_641983.png
Mischttp://www.invision.tesalliance.org/forums/uploads/1264182382/gallery_378_5_25758.png