I needed to use a transparent png on sarisoldiers.com home page.
Just to cover the possible IE6 users out there I googled for a png transparency fix for ie6 and found
I used the version of his solution that puts the filter in the stylesheet (actually in the head of my google template) and simply wraps the image in a span. It worked! Code shows how you can use one rule for many images in site, with a span id for each. Image name is specified in the html and the conditional commands. Image size and span size must match.