Is there anyway other than full screen to get the gameplay window to be bigger than 800x600? My monitors resolution is soooo much larger than it was back when I played UO that 800x600 is literally a quarter of my monitor.
In Razor, there is an Option for Force Game Window Size. I prefer 924x700, but some push it larger than that. Once you've enabled this in Razor, open UO Options (Alt+O) and click Apply.
If this doesn't help you might try installing the razor version on our website and then disabling razor updates before opening it. There have been reported problems with the new razor update causing problems with adjusting the game window size. How to disable razor updates