The dock for the Lenovo T60p has a Dual-Link DVI output, and I can presently drive a Dell 24" LCD panel at 1900x1200.
For extreme mind mapping, I want to drive a Dell 30" display at 2560x1600 from my ThinkPad T60p.
The T60p has a ATI Mobility FireGL V5200 chipset, which as best as I can tell should work at 2560x1600.
Of course, I'd like some assurance before I move on this. If anyone has done this, please let me know.
Meanwhile, I'll continue to research.