Barry, am I right in thinking that support for png was added when the sxxlxxs skin was in the making? if it wasn't would it be to much to add it now, I'm trying to make glass transparent buttons but there not turning out rite, If I load a normal image into Photoshop and create a glass transparent button and save it as all one image then the button turns out brilliantly, but if I make a glass transparent button and save it as a button, its crap, even though I've saved it as a web image, It might be something im doing wrong when saving it as a gif
PNG support isn't in for buttons, it would involve me replacing the control we have now with a different one. It could be done but would take a while and would probably break all previous skins.