IIRC EQ supported up to a 1280x800 res (Maybe a tier or 2 higher)
Best solution? Set your desktop reso to the same reso as the EQ client (Run eqgame.exe click options, next past the race features and you'll see the reso EQ is at).
Hurray EQ fits your full screen now.
Least that's what I did for my box I play on, miss my 1600x900 reso though 
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