Hey fellas
Phil - I have an older unit, that came with my Toshiba as a giveaway. It's the 701 model, with a 900MHz Celeron and 504Mb of RAM. It is a flash drive model (4GB) which i wanted so that it was all solid state. Much cheaper to run in terms of field battery power - no moving parts.
DJ - I'm running XP Home, SP3.Mine came running Xandros Linux, so I had to install it over Linux in a specif manner that is explained in the fairly comprehensive manual. All the XP drivers come on CD with the unit - for which you need an external USB CD drive to load. You leave out some of the standard Windows services to save room - can't remember which ones though. I'm now running everything I need to on 1.37Gb of "disk", leaving plenty in reserve. I could even load Cartes Du Ciel if I wanted to... which i might. The screen on my 701 is smaller than the current 901 at 800x600. It's plenty big enough to run PHD though, and if you really want to, it'll support an external monitor at 1024x768 at least..