Actual if I knew anything about making skins I would have helped you with it. You see that is what I do is help people on a volunteer basis. But I have not read any post on making skins and how yo do it there was a post earlier today from a guy making one you might want to watch that one or post a question to him there. Like I said have fun making your new skin. The link below is to the above mentioned thread.
http://www.gnutellaforums.com/showth...threadid=43711
Here is another I found when I did a search using key word making skins there are quite a few in there if you search.
http://www.gnutellaforums.com/showth...t=Making+skins