[Kendian]

I'm pretty much a newb at UI 'maneuvering'. I call it that, because I'm in NO WAY any kind of code jockey. I cant tell Lua script from Lunar landings, lol. Anyhow, what is the protocol for uploading, showing, etc, a UI? I just modified the addons Ive downloaded here, to work how I want them to, for my own use, but Ive shown friends/guildies screenies, and they want it. SO do I get all the addon authors permission, do I need to be a premium member? I don't really get what the protocol is for compilations, or how to go about even uploading anything. Is there a place on WoWI that would tell me?
My thanks, in advance, for any help, and apologies, if I've been unclear, in any way. (My mind tends to wander at the oddest moments, lol)