Erm I dunno what you mean. The cable should be white both ends (white = DVI), one side fits into a slot like that on your graphics card and the other end fits into a slot like that on your monitor.
If your monitor has a permanently attached blue connector (blue = VGA) then you'll need a VGA to DVI adapter, one of which should have come with the graphics card but if you bought the PC as a whole they might not have given it to you.
If your monitor has a permanently attached blue connector (blue = VGA) then you'll need a VGA to DVI adapter, one of which should have come with the graphics card but if you bought the PC as a whole they might not have given it to you.

