lenovo t420 and multiple monitors

[Aaron]

Hi All,

I'm wanting to get a newer laptop to run OpenBSD on but want the ability 
to have multiple monitors and extend the desktop when I'm at home or at 
the office. Before I spend the money I'm wondering if anyone has any 
information about the lenovo t420's and the video card, intel hd 3000 
(1400x900), and if it will support having multiple screens with xrandr 
(or any other method).

Additionally, I know that some of these have an additional nvidia option 
and wondering if that would pose an issue. I know that nvidia hardware 
isn't supported really due to their lack of openness, but I believe the 
nvidia graphics can be disabled in the bios. Any info on that would be 
appreciated as well.

Thanks,

Aaron