if the only thing you are trying to accomplish is file
sharing, you might try emailing the files between
computers. I have a laptop with XP pro and my office
uses Mac OSX. The latest versions of MS Office are
installed on both machines and the transfer of files
between these two machines works very well. If you have
trouble opening files on the Mac, click once on the icon
and type command-I, click on "open with" and select the
proper application. This should only have to be done the
first time you receive a file in this format.