os.system commands in CGI on IIS?

[David Brydon]

This question seems to come up repeatedly over the last several years
of posts, but I haven't been able to find it answered:

Serving web pages from Microsoft IIS on NT, in a python CGI script, 
if I execute
os.system("copy c:\a.txt c:\b.txt")
It does not happen when the cgi page is called from a browser.
However if the script is run from the command line, it works fine.

Is there any way to get IIS to execute these os.system calls?

Thanks much, David