Portrait mode

[Kenneth P. Turvey]

I'm considering buying a monitor in the not too distant future, but I 
would like to be able to switch between landscape and portrait mode.  Can 
Ubuntu do this?  How do I find out which monitors are compatible with 
this? 

In addition, I will be attaching this monitor to my laptop, a Dell 
1420n.  Should I be concerned about getting it to work here?  

Thank you all,

-- 
Kenneth P. Turvey <kt-usenet at squeakydolphin.com>