In the post above yours:
8) Download the latest eqchangesvXX.zip file from the patch notes. As of this post, we are on v29, found .
http://www.project1999.org/files/eqchangesv29.zip (if this post is out of date, just update "29" with the current number)
9) Extract the eqchangesvXX.zip file into the C:\Everquest directory, overwriting any files it asks for.