Hi,
I have an IBM P260 21" Trinitron monitor, and it has two inputs--the second of which is DVI-A. While it does use the white DVI connector, it is not a digital connection.
Put simply, DVI-I is set to become a standard monitor connector, because it is capable of outputting both digital and analog signals from the same connector. So for instance I have a Radeon 8500DV video card, which has a DVI-I connector on it. My IBM monitor plugs into that connector and uses the analog pins (the five on the right hand side, I think) to get the analog signal. If I plugged in a DVI-capable LCD display to the same connector, it would use the pins on the left side to get a digital signal.
I love this IBM monitor (the successor is already out, the P275, which can attain higher resolutions and refresh rates), and it's nice to be able to plug it straight in without needing a dongle. If 20" LCDs were cheaper I would switch just because DVI on an LCD is display perfection, but for now I'm happy with my Trinitron.
Hope that helps.
l2c