I took a quick look over at the Snapsis site to see what is there in terms of demos. If you look at this:
http://demo.snapsis.com/Templates/t...fault.aspx It does most of what you want to do, at least in terms of positioning the second level menu. If you look at that sample skin/menu configuration you should be able to figure it out. You will have to restyle most of the elements, but that example has most of the behavior that you want, or that's the way it looks to me.