Guys,
If your having trouble with EQ crashing in full screen mode, i figured it out.
in the everquest directory:
there is a filled called "eqclient"
if you open that file and find the line under [VIDEO MODE] that says WINDOWED MODE: FALSE, and change the word FALSE to TRUE, it will launch.
I tried resetting it to full screen mode once in game, however my grafx card just geeks out...so ill keep it to windowed mode
Hope this helps anyone!!