http://www.project1999.org/files/eqchangesv27.zip is the latest set of spell files.
This forum:
http://www.project1999.org/forums/forumdisplay.php?f=11 is where you will find the latest files.
This thread:
http://www.project1999.org/forums/sh...ad.php?t=98585 is the most recent post which new posts/patches will be modeled after. The reason those files are out of date is because there was an emergency patch with new files, and the original post was not update to reflect this.