Communicating with serial port

[Peter Blom]

I shall write a python program for downloading data from a memory card in a
measuring instrument, via a serial port.
For this purpose, I have downloaded SioModule.zip - a serial comm extension
for windows 95, upgraded to Python 1.5.1.
This does not seem to work - when importing the module 'serial.py', my
system hangs (Windows 98, Activestate Python 2.0).
Could anybody give a hint?

Peter (a newbie)