Windows 7 Starter Edition - multiple monitors

I am thinking of buying a netbook with Windows 7 Starter Edition.  I've read up on the limitations and can live with most of them.  However, I am unsure about the lack of multiple monitor support.  What exactly does this mean?  Does it mean that I can't extend the desktop onto an external display, and, say have a different program open on each screen, or does it prevent me from cloning the netbook screen onto an external video source such as a projector?  If the former, then I'll definitely buy it; if the latter, then it won't work for me, because I can't use it to run PowerPoint presentations.

Many thanks in advance if anyone can clarify.

Gary