I called Lenovo tech support about this as I was wondering the same thing and they said I can only get the same resolution on an external monitor through DVI as the native resolution of the laptop. Was the tech support guy wrong?
Will the max. resolution depend at all on the video card? Do I need to get a T60p with a FireGL 5200 256MB or will X1400 128MB support external 1920x1200 just fine?
Also, if I get a third-party firewire card for the T60 (sucks that T60 doesn't have firewire built-in), will I still be able to access the firewire port while the notebook is connected to the dock?