WSS 3.0 and MOSS 2007 Infrastructure Updates
This includes infrastructure updates for Windows SharePoint Services 3.0, Microsoft Office SharePoint Server 2007, and other Office System technologies. It primarily contains latest Enterprise Search features and performance updates.
2. KB951297 – Infrastructure Update for Microsoft Office Servers including Microsoft Office SharePoint Sever 2007 (Download x86 and x64)
Installation instructions for Windows SharePoint Services 3.0 Infrastructure Update and Microsoft Office SharePoint Server 2007 Infrastructure Update are available for download. Moreover, details and links of related articles are available at Microsoft SharePoint Team Blog.