UVMapper is just used to create how the texture map will be applyed to the object. You need to create a Transparancy Map for a transparant effect. This can be done in any image editor program that saves jpeg or gif images. Black is completely transparent while white is completely solid/opaque. And various shades of grey determine how transparent an area is. You may also combine a bump map to the object to get a textured glass effect. I hope this makes some sense. James