Some video cards do, and some video cards don't. You can buy a vga -> dvi adapter, though.
Via an DVI to HDMI adapter cable.
Depends on if you have a DVI compatible monitor and video card. DVI is considered better than VGA.
It depends on video card. If you don't have DVI slot then you will have to get a female VGA to male DVI adaptor. the DvI would then go to M1 and connect at projector.
Yes there are video capture cards that support an external DVI monitor, But the whole point of a video capture card is so that the operating system can both control and use it. If you need to have the signal fee out of the PC and onto a plasma or big LCD, then you would use the PC's graphics card which would have its own DVI port.
No. DVI carries video only.
GeForce 9800 Gt usually has 2 dvi ports, if you have used one of ports for tv there is no way to get connected two monitors and tv to the same video card, you need to get one more (if supported by your motherboard). If you connect tv through s-video port, use another dvi port. You might have to use dvi-d-sub converter.
If by built-in you mean it belongs to the motherboard, than the answer is no for dedicated video card and yes for embedded. Usually dedicated cards are more powerful, thus it would a good idea to use DVI port of the video card unless you really want to use HDMI. By the way, there are special DVI-D-to-HDMI adapters you can purchase. It supports audio too.
You would need a Video card with DVI port and a cable with a DVI connector on one side and two DVI/Analog connectors on the other side.
The new card is not dvi compatible
Full form of DVI - Digital Video Interface Rahimuddin
DVI is just as good as HDMI for digital video, unless you need high resolutions.
There are three forms of DVI; DVI-A, DVI-D and DVI-I. The "A" stands for Analog, the "D" represents Digital and "I" is a combination of the two. The adapter sends an uncompressed video/audio signal to a receiver such as a monitor, but the signal itself can be either digital, analogue or both.