It further hardens the Office suite against potential attacks and other security threats. Microsoft® Office 2003 Service Pack 3 (SP3) for Multilingual User Interface Pack represents a major evolution in security for Microsoft Office 2003. Office 2003 Service Pack 3 for Multilingual User Interface Pack provides the latest updates to Office 2003 Multilingual User Interface Pack. Office 2003 Service Pack 3 (SP3) for Multilingual User Interface Pack