On a thinkpad 360Cs I have installed an "IBM High Speed PCMCIA Data/Fax Modem" model FC3635. What sort of serial interface does it have or mimic? I consistantly get lost characters at 19200 under Windows v3.1 using different comm programs. Anyway to activate some sort of buffering? An old DOS utility says that it does not have a 16550 compatible interface. Thanks, Brendan