Using python Serial module on windows

[Holger]

Hi

I'm using python Serial from:
http://switch.dl.sourceforge.net/sourceforge/pyserial/pyserial-2.4.tar.gz

to implement ymodem and other protocols on the PC com port

And it works like a charm in cygwin, but when I try to use it directly
in python under windows using active state python installation, it
says it's missing the module win32file.
But the win32file module looks like it is no longer in development and
support stopped at python 2.2

Am I going about this issue the wrong way?
Can anyone suggest a way out of this fix?

Thank You
Holger