I believe that it's you who are confused. There is no direct import from Outlook for Windows in to Entourage for Macintosh. Unless there is a medium used such as a Palm handheld device, Outlook Express, Exchange Server with LDAP support and any other third party software of which that I am not aware of, users cannot sync data from Outlook for Windows in to Entourage for Macintosh.
I know it's always good to blame Microsoft for any problems, but sometimes, the problem lies between the chair and the computer or the cause of the problem is ignorance.
I hope the information in the first paragraph helps you as well.