The G400's second RAMDAC is severely limited, and is not supported as a second head in 3.9.17. There are additional technical issues with how to specify the second RAMDAC in the config file that make it a bit of work to support. It will probably show up eventually, but not just yet.
You can do 2 PCI cards too, not just AGP/PCI. (That's what I have.)
Also, there are some AGP cards with several G200's (for example) on a single card that may be supported (there seem to be some BIOS issues just now).
There's an article with a bit more info at the Denver Post: http://www.denverpost.com/news/news010 6m.htm
The G400's second RAMDAC is severely limited, and is not supported as a second head in 3.9.17. There are additional technical issues with how to specify the second RAMDAC in the config file that make it a bit of work to support. It will probably show up eventually, but not just yet.
You can do 2 PCI cards too, not just AGP/PCI. (That's what I have.)
Also, there are some AGP cards with several G200's (for example) on a single card that may be supported (there seem to be some BIOS issues just now).