<t>To be encyclopedical on a subject that keeps popping up:<br/> There are 2 possible types of signals, Analog, and Digital. And then there's connectors.<br/> VGA is only analog.<br/> DVI can be Analog (DVI-A), Digital (DVI-D) or both (DVI-I, "I" is for integrated). DVI-A is rare, -D frequent, and -...