The challenge of viewing ever denser amounts of information on smaller and smaller screens is something I've been wrestling with for a while. One path I have been running down is the idea of some way to magnify relevant sections. It looks like someone has already run farther down that road: Idelix Software has developed what it calls Pliable Display Technology that essentially allows the user to magnify context sensitive information. If you can translate most of your data graphically and then use a tool such as PDT, those 240x268 usable pixels on a PPC may actually become more usable!