A small hack on the Q7 to install 'rdesktop' and a remote-desktop capable windows machine and this will work. Of course you will need local network capability to do this which will bring the battery life down to about 6-7 hours but yes, this is one way to do it.
I've been using Firefox on my desktop this way too. It's way way faster and allows one to run internet apps too.
I wrote an article on this topic last year:
http://www.umpcportal.com/2008/04/1439