Resolution Changer 4.00 Beta 2

Resolution Changer is a command line application that can change your desktop width, height, color depth, and refresh rate temporarily or permanently (via command line switches). You can have ResChange run another application in a specific display resolution and return to the previous resolution when the application finishes

The command lines switches let you alter only certain dimensions and choose the best refresh rate (or a specific one). Running reschange.exe without any switches displays usage information.