Hmmm..it wouldn't be exacty simple with Paint.NET, or even Paintshop Pro. If you want it as a 2D image, then it might take a while...I suggest going with Frojo's idea.
I saw a tutorial on Youtube a couple years back on how to make such a thing with Photoshop, Cinema 4D, and some other program..but I can't seem to find it now.. But I guess it doesn't really matter, because that stuff isn't freeware, and it would take a big bite out of your wallet :shock: