Hi... We have several tutorials scattered across our sites on how to make some of the themes and such.
How to make a bootskin http://www.wincustomize.com/Articles.aspx?AID=97764
How to create an icon http://www.stardock.com/products/icondeveloper/info.asp
Those are 2 that I know about off the top of my head. Check out our products on http://www.stardock.com/products/. You'll find some products that will enable to create some cool stuff with your pictures.