Originally Posted by dev0
Just to clarify: You do take the signal from your 7900GS by the means of DVI, patch it through a mysterious '3dp pci card' so you can connect this 3dp card to your beamer by using bnc (which afaik doesn't provide any EDID info)?
If so, then why would you do that? Is there any reason not to connect the 7900gs directly to the beamer?
Yes, that is correct. The PCI card does blending and geometry correction for curved wall displays.