I found it http://www.hp.com/omnibook/products/xe2/index.htm
It is referred to as "Dual-display capability for double the work space and for improved presentation quality"

Ed, thought I would CC FYI.

>I have an HP OmniBook XE with external monitor connect that treats it as two separate displays. The sales pitch was "Hook up a projector to the external connector and read your notes off the screen while your presentation is going".

>>Is it possible on any notebooks, or with any OS's to display two desktops? By this I mean... can I attach a 17" monitor to the desktop and display my dev environment and in the notebook LCD display my applications that I have compiled.
>>
>>So far, I have only seen the ability to display the same desktop in both monitors.