Microsoft has revised Security Bulletin MS08-051, which addresses vulnerabilities in Microsoft PowerPoint. This revision describes a rerelease of the standalone update package for Microsoft Office PowerPoint 2003.

According to Microsoft, users who applied the update provided through Microsoft Update or Office Update do not need to take further action.

Users who installed the original standalone update should apply the updated package as described in the revised Microsoft Security Bulletin.

More details at the MIcorsoft Web Site
http://www.microsoft.com/technet/security/bulletin/MS08-051.mspx