unpack the zip file directly to your main EverQuest2 folder and say yes to all. 
But since your reading this you have already unpacked the folder.

if you unpack the file then..
1- copy & past the eq2.ini file to your main EverQuest 2 folder.
2- open the UI folder and copy that folder to your UI folder.
	or copy the UI folder to your main EQ2 fold and say yes to all.
3- there is a folder with in daimond folder that contains a few .xml files for a smaller EXP. bar for 1024x
resolutions also a smaller Targeting as well with 2/3 maintained & effects. if you want to use these files 
copy then to you daimond folder and over right a few of the files there.

when done start your game and you got a new UI.

also your inventory bags are sizeable. there seems to be a glitch in the system when you shrink them, being 
that when you have less then a 19 slot bag and it drops them it will drop it as low as it can go, reason
i made it sizable so you can shrink as you need.