Up until last year my UI was made for a smaller screen with the left side of the toolbar erased to make way for the chatbox. That changed when I finally got a big monitor. I would look through what's available on LotROInterface. There is probably a minimalist interface somewhere that will serve your specifications, although it may not be up to date. There are also tutorials on installing them. Yes, it's a little difficult for a newbie, but you can do it.
[URL="http://www.lotrointerface.com/downloads/info513-ElvenAdventuressUI.html"]Elven Adventuress UI[/URL] ~ [URL="http://kittykittyboomboom.wordpress.com/2011/09/28/basic-newbie-guide-to-playing-lotro/"]Newbie Guide To Playing LotRO[/URL] ~ [URL="http://kittykittyboomboom.wordpress.com/2010/12/29/basic-guide-to-lotro-dual-boxing/"]Guide To Dual-Boxing LotRO[/URL]