So, I don't know if it is well-known or not, I tried searching and couldn't find anything on forums about this BUT I found a pretty easy way to enable classic spell effects on Underfoot clients without adding anything. Just delete:
.../everquest/spellsnew.edd
.../everquest/spellsnew.eff
Thanks to Samataman for reposting it.
http://everquest.allakhazam.com/foru...10658374056245
I hope someone finds this useful!