hi all
Maybe you already read it but if you use some of older file formats in Office 2003 then read David LeBlanc’s
blog post about the problem after you install SP3.
http://blogs.msdn.com/david_leblanc/default.aspx
See also the links in this post to the REG files to unblock the blocked files
Susan Bradley has some more notes (and a downloadable zip file containing .reg files):
http://msmvps.com/blogs/bradley/archive/2007/11/28/still-having-issues-post-office-2003-sp3.aspx
or
http://snipurl.com/1×4mr
(Just a little duplication!)