ImportError: No module named win32api

[eddie wang]

Hi, I was trying to run a python script from my DOS prompt. I got the
following error message:
E:\>installer.py
Traceback (most recent call last):
  File "E:\installer.py", line 101, in ?
    import win32api, win32file
ImportError: No module named win32api

Can anyone tell me what this error message means? My OS is Windows XP.
is win32api something that's only available on windows2000, but not on
XP?

Thank you in advance!
eddy