error initializing on windows 7

[freemant2000]

I'm trying to run it on windows 7 enterprise but it fails with the error below:

o=win32com.client.Dispatch("SAPI.SpVoice")
Traceback (most recent call last):
File "", line 1, in
File "C:\Python27\lib\site-packages\win32com\client_init_.py", line 95, in
Dispatch
dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)
File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 114, in
_GetGoodDispatchAndUserName
return (_GetGoodDispatch(IDispatch, clsctx), userName)
File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 91, in _GetGoodDispatch
IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, pythoncom.IID_IDispatch)
pywintypes.com_error: (-2147221005, '\xce\xde\xd0\xa7\xb5\xc4\xc0\xe0\xd7\xd6\xb7\xfb\xb4\xae', None, None)

The error code seems to indicate that the given name "SAPI.SpVoice" doesn't exist as I got the same error giving it a random name.