Yes sir, it's that one posted above. I've never been to the Magicians Tower, so I don't know if the Necro one is the same as far as content.
I've been a member of the Necro sight for many years and it's gone through some changes and grown. It's mostly a msg forum board, with guides for hunting and leveling. Spell info, armor, weapons, you know the basic stuff a Necro would want or need to know about.
I am unsure if it has any GUI or skins there, but then again, I am new to that as I just joined this site today. At the very least go check it out and see if it has what you're looking for.