Ok so I am trying to set up a second monitor. I recentally got a new computer and can only use one monitor with it. (with new graphics card). I am using my old hd tv with a vga card and a vga to dvi converter (apple's) because by graphics card only has 1 vga connection. When I do this, the tv says there is nothing connected with VGA. Am i just being stupid and overlooking something? If you need more info just ask!
Typically modern GPUs only support one VGA monitor. The DVI-VGA adapter only works on the DVI-I port, and will not work on the DVI-D port because no analog signal is present. If you need a second VGA port you may have to use a display port to VGA adapter. Impossible to tell without knowing which card you have