The new Yahoo! Chess requires a screen resolution of greater than 800x600. To change your screen resolution, click the Start Menu. Choose "Settings," then "Control Panel." Double click the "Display" icon. Choose the "Settings" tab and pick a screen resolution greater than 800x600.

If you cannot or do not wish to change your computer's screen resolution, take the following steps depending on the browser you're using. In Internet Explorer you need to close the Explorer window, hide the taskbar, then open the new Yahoo! Chess window again. The entire screen should be visible.