BAsically any modem will work with the Zoomer as well as the Psion. You can obtain pocket modems from say $50 up to $500 . I just bought a PPI pocket modem 14.4 baud and it was about $380, but I also have a Viva Pocket modem that I bought a year ago for $110 and I have seen it for about $79, it has 2400 baud. Both modems also have fax capablilty and on the Zoomer you can connect to the Zoomer limited version of AOL. Unfortunately you cannot get to this area with the Zoomer (sigh)
Jeff