nice stuff, I looked into the " icoformat" plug-in the image I provide is comparison of my understanding of another product thus far. the .ico plug-in has yet to make transparency from my point of view. the other product is "Folder Icon X 1.9 for Mac OS X" application for mac, It involved a much longer process- save the image file. and mask file. and import both to achieve transparency once saved. I'll have a look for a .icns format plug-in to make my life easier.