StarTech.com USB2DVI - Manual (Page 7)

4
Configuration
Windows 2000/XP/Vista
To configure the image being displayed by the monitor that is
connected to USB2DVI, right-click on a blank section of the desktop,
select
Properties, then click on the Settings tab to display the
following screen:
For Vista, right-click on a blank section of the desktop and select
Personalize, then select Screen Resolution on the next screen.