All video cards initially produce a digital video signal, which is converted into analog at the VGA output. The analog signal travels to the monitor and is re-converted to a digital signal. DVI-D eliminates the analog conversion process and improves the connection between source and display.
^That was taken from the link I provided.
Alright ya your right.After reading around some more it seems DVI-D is a digital only source and cannot be converted to analog.Looks like your only choice is to get a new card.
Your not going to be doing any 3D rendering with the monitors are you?