Office System (2003) SP2 Patches
Office System 2003 Service Pack 2 was released in the end of September 2005. You can download SP2 for Office System 2003 right here:
Download Office System 2003 SP2 (101mb)
Currently, if you’re running Office System 2003 with SP2 there are no security-related patches that you should apply.
You should also go to the Office Product Update page for a full system scan that will tell you what you need and what you should download to keep your Office Suit up-to-date.