Norton Internet Security Antispam not fucntional on windows 7 office 2010

Recently I purchased machines with 64bit windows 7 operating system and office professional 2010.  Outlook 2010 norton antispam is non fuctional on all of these machines.  I read on the forum that client integration is not supported for 64bit windows 7.  Is this true and when will this issue be addressed?  Is there a patch to download to correct the issue?  A non functional spam filtering antivirus program is not what we wanted to purchase.  Please advise.