Ok, if I understand you correctly, you are asking if you can this game at a lower windows resolution? Sorry if I'm getting this wrong but I'll through out dumb info any way.
When you log into the game you hit the ESC key to bring up an option menu where you can set the game to run
Full Screen or in a
Window Screen and the resolution can be 1024x768 or 800x600 -I'll explain this just in case.
Full Screen
-This means that the game takes up the entire window with no minimize (underscore), restore (square), or close (the X) buttons at the top of the screen and no task bar at the bottom of the screen. You need to hit the windows button (between the CTRL and ALT buttons) to minimize the game.
Window Screen
-Obviously the opposite of Full Screen as there are minimize (underscore), restore (square), or close (the X) buttons at the top of the screen and there is a task bar at the bottom of the screen. In this mode you can also move the window around like any other window. Also in this mode the pixels are slightly compressed as you can see it looks a little fuzzy.
Now, this game isn't set up for wide screen HD systems but you can run it in windows mode with no problems on a HD screen, and it'll probably look better on HD anyway.
So you'll probably want to keep the default mode of 1024x768 in window mode for your setup.
Enjoy
