Is there a way to import cakewalk INS definitions into garageband?

I have an Alesis QSR sound module, and want to import the sounds into garageband. I don't really know anything about midi, apart from hooking up a controller when I play out. I can download the instrument definitions as an INS file for cakewalk, but don't know how to import that into garageband, or if this is even supported. Any help would be greatly appreciated. Thanks!