You'll need to know what a zip file is and how to unzip a zip file.. So lets start there..
A .zip file is an archive file that contains 1 or more files & folders in a compressed format..
The files you download from EQInterface are .zip files and need to be "unzipped" or decompressed for Everquest to use them..
A good program for this is called WinZip..
You can get a free evaluation copy from here:
www.winzip.com
Read this for info about using winzip to decompress a zip file:
http://www.winzip.com/xdir.htm
Now to install a ui.. Sounds like you had it right but missed the unzipping step
1. Find the UIFILES folder and create a folder named TEST inside of it
2. Download an interface (this is the zip file)
(You can start with mine for now.. Might be a little big in 800x600 (but, I know it's up to date))
http://www.eqinterface.com/sdownloa....php?s=&id=1802
3. Use Winzip to Unzip all of the files from your downloaded zip file into the TEST folder
(After unzipping the file open the TEST folder and make sure it contains several files and not just ONE folder.. If it's just a folder open that folder and move all the contents from there out to the TEST folder)
4. Enter EQ
5. in game type /loadskin (the loadskin window will appear)
6. Select TEST from the list in the loadskin window and press "Load Skin"
Hope that helps..