Just looked at the Asus website, there is no integrated video. Your cpu doesn't support HD graphics anyway.
http://www.asus.com/Motherboards/P5W_DH_Deluxe/overview/
I'm guessing you meant that 9 pin blue looking video port?
which is;
Serial port.
This 9-pin COM1 port is for pointing devices or other serial
devices.
Basically usb replaced serial.
http://en.wikipedia.org/wiki/Serial_port