[Mobhack]

As that paragraph says - you wont get offered the choice in windows vista/7 since it messes the palette up. That's why the button isn't active - since it is irrelevant. You will, if it is XP or lower or if it is windows 8 and up since none of those are burdened with Aero, nor does full screen mode need to run a command script to kill explorer.

As to screen quality - what resolution are you trying to run in, and what game graphics mode?. What resolution have you set your windows desktop to?.

If you have the free demo and are trying to run 800x600 in full screen then it will be very pixelated. On a 1600 monitor its probably best to test drive the free game in an 800x600 window.

If you have the full game then windowed mode is recommended at desktop resolution. Adjust your windows desktop size before firing up the game should you want less of a screen size.