Hey, I own PC which is connected to Dell 2007FP display. I would like to do the following: * keep the Dell 2007FP as the monitor of the PC. * be able to use the Dell 2007FP as a second monitor of my rMBP, while not plugging out the connector from the PC. Is such configuration possible? link for the Monitor if needed (http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=320-4687) Thanks.