Sounds like a resolution issue. Try reading this:
http://www.eqemulator.net/wiki/wikka...QEmuFAQ#QLinkL
If that didn't work check your file path. This C:\Program Files\Sony\Everquest and this this C:\Program Files (x86)\Sony\Everquest
are not the same thing. Everquest should never be installed to C:\Program Files\ in Vista or Windows 7.