Project 1999 plans on running only Classic, Kunark, and Velious. If you'd like to play Classic through Planes of Power, EQmac (specifically designed to run on mac!) is now free-to-play. Its an SOE managed server, its free, and it goes up through Planes of Power.
http://www.eqmac.com/
However, if you'd like to stick with C/K/V, then the guide posted on our forums should help get you set up:
http://www.project1999.org/forums/sh...ad.php?t=56238
Good luck, and welcome back to our world now! (tm)