I don't know about flashgot, maybe you should try uninstalling it. Some of those skins that come with LW need to be d/loaded first. I don't know why they show up as being available.
The easiest way I've found to get skins is to d/load them with LW. See my post in this thread:
http://www.gnutellaforums.com/genera...tml#post321475