Your first try was closer... you need to put them in the
EQ2\UI\EQ2MAP\ folder
not the
EQ2\UI\EQ2MAP\eq2map folder.
Using the /loadui command at the moment will make your interface do goofy things. It has been broken since eq2 went live. Also for /loadui to show an interface to be avaible it needs to have a eq2ui_skininfo.xml in the folder with it.