There is a tga/blp converter at Curse: http://wow.curse.com/downloads/details/90/

I made a package of emote icons a long time ago so there are probably some missing. Greens are friendly, yellow neutral and reds are hostile. Here is a sample:



Here's a JPG of the package: http://feathermoon.us/files/emotes.jpg and the ZIP: http://feathermoon.us/files/emote_icons.zip