Ok, number one, if you're intending to use alpha maps (tga/dds) for nameplates, you have to stop using pure green for the invisible channel. Instead, set the regions you don't want to display to 0% alpha (fully transparent). The only real advantage of alpha-channel transparency is that it isn't on or off; you can set the nameplate itself to be partially transparent and to show the texture underneath through. Because the plates below will shine through the nameplate in this case, you get the shine taken care of for free as well. Otherwise, you need to create a shinemap for the nameplate.