Adjust display settings

1. Click Start, point to Settings, and then click Control Panel.

2. Double-click Display.

3. Click the Settings tab.

4. Move the Desktop Area slider or the Screen Area slider to the 800 x 600 pixels setting.

5. In the Color Palette box or in the Colors box, click High Color (16 bit).

6. Click OK, and then click OK again.

7. Click Yes to accept the settings.

After you change your video resolution, you may have to adjust your monitor settings so that your screen displays correctly.

If you know what resolution your game is set to run at, set your Windows display settings to the same resolution as the game. You may also try setting your display resolution to 640 x 480 High Color (16 bit).
Adjust graphics hardware acceleration