I have an HP p6510y with a NVIDIA GeForce 210 card. I inherited this from my boss when he quit and I know he had 3 monitors running with it. I cannot for the life of me figure out what I need to do to get this to run a third monitor. I am assuming he took whatever cord he was using with him. It has 3 connections, DVI, HDMI and VGA. I can only seem to use 2 of them at a time, so I need some sort of splitter for one of the connections. Any help would be appreciated as I can't stand working on just 2 monitors anymore!