Hello, I have a Mac Pro from early 2008 with the Radeon 2600 card in it. I am getting no DVI signal on mt DELL 2407. My wife claims it may have started when she hit the wrong button on the monitor when turning it off but i doubt that would permanently damage anything. I've cycled through the inputs to make sure DVI is selected, power cycled everything numerous times. I tried both DVI ports on the card, a VGA cable with the adapter. I even reset the PRAM. Nothing. anything else I can try? Im desperate now cuz I have something very important toprint tonight. If the card is hosed, will the ATI 2600 HD cards sold at compusa for $60 work? They appear to have another manufacturer on them and have another ouput jack. Bill Addendum. I just used a VGA cable with the DVI-VGA adapter (and hooked the other end to the VGA input to the monitor and it DID work. I would guess that it could be the DVI input of the monitor but I also tried another monitor with the DVI cable and it did not work. Also, when I unplug the DVI cable from the back of the MAC, the monitor does know that it's unplugged (vs no DVI from the card).