Symantec originally promised this support by March 31, 2007. It is still not available, and Symantec will not project when it will become available.
Do not hold your breath waiting for BE 11d to support Sharepoint 2007.
Find a different solution.
If you are curious for more information, search this forum for "sharepoint", sort by date, and read the history.
Good luck - you'll need it.