I think the OP is having troubles on where to place the ui files and how to activate it.
If I recall correctly, there are installation instructions on the down load page.
http://www.eq2interface.com/download...AttackBar.html
and in addition
If you already have a custom UI add the fallowing to your eq2ui_Custom.xml file above the first </Page>
<include>Razc_Attack.xml</include>