Can't get DVI to work?!

I don't know if it is my MSI GeForce4 4400 or my Samsung 170T LCD moniter with DVI input but I can't get it to work in digital mode. I can use a DVI cable and all it does is work in analog mode. When I try to switch it to digital mode, when it I am connected to the DVI output, it flickers for a few seconds then goes right back to analog mode. I am running the 29.42 detonator drivers, what could be wrong and how do I get it to work in digital mode?

try checking the DVi cable type...I believe there are a few types...also try going to the settings of the videocard in Windows...maybe you have to do some setup...but it's odd that you have to do that coz usually it should be automatically set to digital once you connect both with a DVI cable...also when changing cable be sure the computer and monitor is off.