With all of these you have to click the thumbnail, right click the image, go to "save picture as...", and then save it as "emenu--.png".
I used the template from this post: Emenu-- Backgrounds
Evil Sexy Lady
Some Chick? (I have no clue, got her off a wallpaper on my PC.)
EDIT: Added another background cause I put a s on the end of background. :P