I just bought a Samsung SyncMaster 204B, a 20.1 inch TFT, after the lightning took out my old Viewsonic colossus. I also have a Nvidia GT6600 graphics card with a DVI-connector. This should be great!

However, I couldn't get the DVI connector to work with the Nvidia driver in Linux. After a lot of fiddling I found out that one should add the following line to the Device-section in /etc/X11/xorg.conf:
Option "ConnectedMonitor" "DFP"
Now everything is big and great again! =)