I too had the same problem on my IBM T-40, it does not have a serial
port.
I was trying to conect with my Volkslogger
I tried various adapters for the USB port but none worked.
In my case I was successful using a docking station that has a serial
port for this computer.
Dan Rihn

Thermal wrote:
There are PCMCIA cards availble which add one or two Serial RS232
ports. computer specialty stores like Compusa have them
such as
http://www.elandigitalsystems.com/interface/sl332.php

I have used 2 used compact flash rs232 adapter on my Casio e100-
Ipaq3635 and Ipaq5555 to view NMEA data from my GPS45 and GPSIII . and
a $10 CF to PCMCIA adapter will fit your laptop and should do it for
you

one rather expensive option is
http://www.compusa.com/products/prod...583&pfp=SEARCH

But ill sell ya a setup like mine for much much less ~$50
contact me at atkron95 at gmail.com if that what you would like to do.