Advanced Digital Display - Dual Monitors

Archived from groups: microsoft.public.windowsxp.video (More info?)

I've got a Gateway 420GR computer with the Intel 915G Chipset and the onboard
Intel GMA900 Graphics Controller. I want to have dual monitor support and
from the reading I've been doing, it appears I may need to purchase the Intel
ADD2 card and from what I have read I can have dual monitor support using
both. Read the following and any input someone could provide on this would
be helpful. (The information contained below is from the motherboard user
manual):

1.7.1.3 Advanced Digital Display 2 (ADD2) Card Support

The GMCH routes two multiplexed DVO ports that are each capable of driving
up to a 200 MHz pixel clock to the PCI Express x16 connector. The DVO ports
can be paired for a dual channel configuration to support up to a 400 MHz
pixel clock. When an ADD2 card is detected, the Intel GMA900 graphics
controller is enabled and the PCI Express x16 connector is configured for DVO
mode. DVO mode enables the DVO ports to be accessed by the ADD2 card. An ADD2
card can either be configured to support simultaneous display with the
primary VGA display or can be configured to support dual independent display
as an extended desktop configuration with different color depths and
resolutions. ADD2 cards can be designed to support the following
configurations:
• TV-Out (composite video)
• Transition Minimized Differential Signaling (TMDS) for DVI 1.0
• Low Voltage Differential Signaling (LVDS)
• Single device operating in dual channel mode
• VGA output
• HDTV output