Here's a handy tip for those netbook users out there in dire need of more screen estate. You can force a DPI value of lower than 96 by using the Windows registry. To do so open
regedit, navigate to
HKEY_CURRENT_CONFIG/Software/Fonts/LogPixels and change the decimal value from
96 to something lower such as
80. Then log out and back in and you will see the changes. I'm using a value of 80 on my netbook and it is about the most that I will drop it while still keeping things (half) readable. You will notice that it really hinders the readability of fonts as well as having some strange bitmap scaling artifacts, but if you're like me and can adjust to it then the extra screen space gained is well worth it :)
You can view a side by side comparison of the my desktop with LogPixels at 80 and at 96 by viewing this imgur album.