my treo 600 is on Orange in the UK. I've had it over a year and am a great fan, but recently have had network problems, calls being dropped, the treo just restarting for no reason, and giving me battery warnings even though it's been charged. I've tried completely discharging the battery and fully charging it. But any ideas on battery replacement - is this possible? And I continue to be annoyed that I can not use this device as a moden with my Macintosh laptop (Powerbook G4). Does anyone know if one can do this with the treo 650 presumably using the Bluetooth capability? I'm seriously wondering about whether to get a more reliable phone to act as modem, and a separate PDA.