I don't remember exactly which entry it is, but it's something you have to change in your eqgame.ini.
I think you need to add or modify these lines:
Code:
[VideoMode]
WindowedWidth=1280
WindowedHeight=960
Width=1920
Height=1080
FullscreenBitsPerPixel=32
FullscreenRefreshRate=0
If that doesn't work I'll PM you my entire ini file. I always back this up and copy it over to a new installation. Otherwise it crashes like you describe.