Bruce, something sounds off with your installation. I suggest that you consider reinstalling the game. Or you could contact WOFF support.
Either way, you should refer to the FAQ file - link
To uninstall, see section 17. To reinstall, see sections 2-4. Information on contacting support is at the very end of the file.
There's no way, within the game, to preview what the skins look like. I use IrfanView for that. It is free software. I actually used it to scan through them one by one and made a list of my favorites.