hi, i just got a dell 20 inch monitor with both analog and digital outputs. i'm testing the monitor out on my dell P4 while i wait for my new system to arrive. my geforce 7600 has a digital input but nothing appears on screen when I hook up the monitor with the digital cable. i was sure to use the monitor's controls to switch over to digital input mode -- nothing appears and the monitor goes into power save mode after 5 seconds or so. (analog input works fine.) any ideas?