Hi Kannis,
Have a look at the following;
CiscoWorks2000 supports the following:
Operating System - CiscoWorks2000 supports both the English and Japanese versions of Windows 2000, Professional and Server, with Service Pack 2.
From this doc;
http://www.cisco.com/en/US/products/sw/cscowork/ps4737/prod_release_note09186a00800adb0e.html
Hope this helps!
Rob
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