IE6 PNG FixOrganica utlises the jQuery png fix from Diller Design. Its a very handy evolution of other ie6 png transparency solutions that had limitations on background-position and background-repeat for css background images.
The belated fix is built into Organica and used to control the appearance of all transparent images for display in ie6.
If you want to apply the fix to other images that arent already used in the theme then you just have to add the class pngfix to the image and it will look the same as it does in all of the other modern browsers.
One point to remember is that you will need to specify a height and width for the image so that ie6 renders it properly. JCE, our editor of choice does this automatically.