I am running a VisionTek ATI Hd 2400 Pro PCI ex16 with a HDMI port, DVI port and VGA port. I have success with the DVI and HDMI running on two HD monitors. But I am having a problem using the VGA port to power the third monitor. It detects the third monitor but it is telling me I can only swap out the third monitor with one of the HD monitors in order to use it. Can anyone help me solve this issue.