Been out of town for a while?
The OXML Converters have been available
for nearly 2 years. The most current revision is a free download from the
Mactopia web site at the bottom of this page:
<
http://www.microsoft.com/mac/downloads.mspx?pid=Mactopia_AddTools&fid=DFD93
FB0-1CF7-4835-892D-A74FAE8D2F30#viewer>
As far as "compatibility issues", it depends on what 2007/2008 features have
been used in the specific file being converted. Earlier versions cannot
support the newer graphics features in particular, so that's where the major
issues arise. Text content & formatting are not generally a problem but the
same considerations for font usage & overall construction techniques used
pertain as for any other cross-platform or backward compatibility concerns.
HTH |:>)
Bob Jones
[MVP] Office:Mac