Running Silva unittests on Windows

Hi altogether

Does anybody know how to run the Silva unittests on Windows XP? Is this 
possible at all? I did the following so far:

1. There was no 'zopectl.bat' batch file in the {zope-instance}\bin 
directory. Therefore I created one:

@set PYTHON=C:\prog\Python23\python.exe
@set ZOPE_HOME=E:\prog\Zope-2.8.5-final
@set INSTANCE_HOME=E:\prog\dlcms1.6
@set SOFTWARE_HOME=E:\prog\Zope-2.8.5-final\lib\python
@set CONFIG_FILE=E:\prog\dlcms1.6\etc\zope.conf
@set PYTHONPATH=%SOFTWARE_HOME%
@set ZDCTL=%SOFTWARE_HOME%\Zope2\Startup\zopectl.py
"%PYTHON%" "%ZDCTL%" -C "%CONFIG_FILE%" %1 %2 %3 %4 %5 %6 %7
pause


2. Then I tried to run the test according to the README.txt in the Silva 
tests directory, returning an error:

E:\prog\dlcms1.6>bin\zopectl.bat test --dir Products/Silva

E:\prog\dlcms1.6>"C:\prog\Python23\python.exe" 
"E:\prog\Zope-2.8.5-final\lib\pyt
hon\Zope2\Startup\zopectl.py" -C "E:\prog\dlcms1.6\etc\zope.conf" test 
--dir Pro
ducts/Silva
Traceback (most recent call last):
  File "E:\prog\Zope-2.8.5-final\lib\python\Zope2\Startup\zopectl.py", 
line 313,
 in ?
    if os.uname()[0] != 'Darwin':
AttributeError: 'module' object has no attribute 'uname'


Best regards
Sam