Heya Mike,
Another good tip I've found when using WinUAE is to set a resolution of 640 x 512 fullscreen. This is perfect for 90% of games
...when it isn't and you're not seeing the full displayed image then I usually set a resolution of 720 x 576 fullscreen.
With both of the above though, you will need to set a custom resolution via your video card first before WinUAE can show / use.