that link above i gave will work with png's in an img src tag only. you can set it to a background in a div, i got it to work, but i hit another wall. it appears what i'm using now will only work on a per-graphic basis, and since i'm using 4 div's in the document (or 4 table cells), it only works on the first cell. looks like i'd have to go through and write a whole new version (or modify the existing one into 4 versions) for each cell. that's a little too inefficient for my tastes, i think i'll just say fuck it, and people with IE can look at a gray background
anyways, here's the link you can use to make it work in a div background
http://www.alistapart.com/stories/pngopacity/
ok, now buy some stuff from me today