I’m setting up fluxbox on a debian virtual machine:

http://www.debianhelp.co.uk/fluxbox.htm

aptitude install x-window-system
aptitude install fluxbox
aptitude install firefox

This is a great setup - so simple and lightweight, you really can’t go wrong! I installed fluxbox onto a 2GB CF card and its working very well. The computer has 256MB of RAM and a very simple graphics card, but the GUI is fast and responsive. The fstab settings are very similar to the setup I have on the HP t5725.