Skins Questions

[Lizbaby4]

I have a few different skins loaded for my site. I want to be able to eventually give the members their choice of skin, but how do I do that without having to change every forum and child forum?

As it is now, when I change a skin, I have to edit each and every forum to the new skin. Is there some way to avoid that time comsuming step??? I have seen other sites where you can chose the skin you want, and then everything you do on that site has the same skin. How do they do that???

Thank you.