Several custom UIs offer several layouts for individual windows. Bob's and Eggi/Sohwyn are 2 that come to mind for me. You have to run the OptionsChooser.exe to setup what windows you want active and the style, but with Sohwyn you have an in-game menu to make visible most of the windows anyways, as long as you have them enabled from OptionsChooser.exe.
There is a bug some players have that results in your quickbars' settings not being kept between logins or even zoning. I have seen a few sugggestions, among them deleting your .ini and .ign files for the affected characters, or uninstalling/reinstalling the entire game from scratch.
Any other suggestions anyone can think of?
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Eggi/Sohwyn custom ui download site
BETA
http://www.4shared.com/archive/LllGqvhe/eggisohwyn1110dbeta_1_.html
(:^
I will stop procrastinating tomorrow.
DAoC desktop calender collection
http://db.tt/GnHh5Sc