Posted 22 April 2006 - 06:07 PM
Depending on how the video driver is written you may be able to do this. It works with my older ATI Radeon 7500 card.
Right-click on any place on the desktop where there is no icon and choose Properties. Now click the settings tab. If you see a diagram with drawings of 2 screens, 1 and 2, click and drag the screen 2 block to the left side of the screen 1 block. Mine asks if you want to enable this 2nd monitor. Answer 'yes'. You may have to do this every time the external monitor is running and then change it back again before you disconnect it.
Your driver may not work exactly this way, but the card/chip obviously has dual monitor capability built in, so it should have a utility to change the setup.