Animated png file -- NOT a GIF animated file

I was conned and cheated by the previous designer HasMad he stole my money and ran, do not use this scammmer HasMad is a fraud. I need a animated folder icon in a .PNG format, I have the animation already in a gif format but i need it redone in a PNG format, I also have the full PSD for the animation. If you can create an animated folder icon in PNG format let me know, here is the image from my site: [login to view URL] what i need is that the green skull fades in and out note* only the SKULL needs to animate, and the outer circle stays static, also i need the fading to go slowly not super fast. please note that the square is 50x50 but the size for the circle with the skull is only 38x37. Please only apply if you can do an [login to view URL] file. milestone will be created instantly and released ONLY after the project completed.