After installing Redgear and Opera, I was able to access the web over a WIFI network. It seemed to be working reasonably well, but it eventually froze up, probably due to impatient clicking.
At this point, the only way I can get a limited sign of life out of the unit is to remove all batteries and power up with the AC Adapter/Charger.
This results in a quick display of small white text on black in the upper left cormer, which is gone far too quickly to read. Then a full screen display of 'Psion Netbook' appears with a left to right progress bar on the top of the screen. The progress bar works its way across the screen in abount 30 seconds and the screen goes blank. The unit then responds to nothing tried except starting the whole process over again.
Given that the power on (Esc On/Off) key doesn't work, nor does the reset paperclip, is there anything else worth trying?