WHS2011 is not a upgrade version. They are both full OEM licenses.
I don't think you can sell them. I mean you /can/, but you'd be violating the terms. Also, it could be irritating to the recipient unless they were a techie, and knew how to deal with it.
I assume anyone installing WHS2003 on a custom system is a techie. I suppose I can explain that in the auction. As long as im im not violating any MS terms and making the license invalid.
So do I sell it or not? lol
