And also please note that Skin only works:
only works with curves:-> to make it work with lines: divide them and then Weld them.http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/DBelvinSkin02.jpg
only works with curves that are not contiguously:http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/DBelvinSkin01.jpg
Cheers, simon.