Something cool I found: pngout (http://advsys.net/ken/utils.htm). It further compresses PNG files losslessly. The link at the top of the page goes to a version with a GUI that is for sale. The second link PNGOUT.EXE is a free version thats only 40k, just drag and drop your PNG's on it to compress em.
Very useful. Thanks.
Works well :)
Cool :) nice resource!