How can I set a widescreen resolution?

In order to set a custom resolution, simply perform the following steps;

• Start the game for the first time
• Change the resolution from the default 800x600
• Exit the game
• Inside your My Documents folder, you will find a Command and Conquer Generals Data folder
• Inside this folder you will find a file called Options.ini, edit this file
• Find the line that says Resolution = and change the value from whatever it is to whatever you want

For example, for a resolution of 1600x900, you will want to set the Resolution = line to Resolution = 1600 900.