The "getting started guide" says use the EQEmuLauncher, but you can still do it the old-fashioned way, which I personally prefer. Find the latest patch notes, download the "eqchangesvXX.zip" and unzip the directory into your base Everquest folder, overwriting any applicable files. We are currently on v27, see the post here:
http://www.project1999.org/forums/sh...ad.php?t=98761