Multiple full UI

[Grimlinger]

K , this is the situation .

Ive downloaded some full UI packets here and now i have the problem = I like the nighelf 2 packet very much for my fay , but if i play it with my assassin , it's sooo ugly , you get it ? the theme has to fit with the rest of the game for me.
So my question is , how can i download & = nightelf2 for my fay and Laffs alt Perdition Bottom for my Assassin so that they don't mix up ? I was thinking at 2 eq2.ini files or 2 UI directories ... :s

Thx in advantage