Get a new motherboard or a new graphics card.
No it cannot you will need to get a agp card or upgrade your motherbord.
The S/PDIF port is used to connect the graphic card to the motherboard in order to get sound in some systems.
No. The GMA 3000 is integrated into the motherboard. Upgrading it would entail replacing the motherboard. If on a desktop machine, a better graphics card may be inserted into an expansion slot.
yes, if your motherboard supports crossfire and your graphics cards support eyefinity (at least 3 of your monitors will need to support display port, or you will need to purchase active adapters for them)
No you can't unless you change the motherboard.
Unless the motherboard was specifically designed to support a riser card, you cannot add additional expansion slots to it.
The best 1gb graphic card for your computer depends not merely on the motherboard of Intel DG43NB but also other factors. The brand does not really matter as long as compatible with your computer.
A intergrated grapghics card usually offers less performance than a designated graphics card. Designated GPUs, fit into slots on your computers motherboard and can be changed to suite your performance liking. A intergrated GPU offers limited performance and is attached to the motherboard and cannot be taken off.
No, Sorry you cannot play it in 128 MB Graphic card as it doesn't support shader 2.0 and 128 mb only support shader 2.0 it requires atleast shader 3.0 with 256 mb graphic card Geforce 6800GT or better or ATI HD 4300/4500 series.
Any PCI Express card will work.
Yes.
Yes, it is. Just make sure that your motherboard has a port that supports the video card you want to get.