The Microsoft Office Specialist (MOS) certification is world-renowned as the standard for demonstrating desktop skills with the Microsoft Office suite of business productivity applications (Word, Excel, PowerPoint, Access and Outlook). It is meant for people in any industry and with various job roles who want to demonstrate a high-level of proficiency with Microsoft’s Office applications.
Microsoft has positioned MOS exams to “provide a valid and reliable measure of technical proficiency and expertise by evaluating your overall comprehension of Office or Microsoft Project applications, your ability to use their advanced features, and your ability to integrate the Office applications with other software applications.â€
There are no prerequisites for MOS certifications; however, some MOS certifications build on others. Passing any single Core MOS exam, offered in more than 100 countries and in 18 different languages, results in a MOS certification for the related product.
Earning the Microsoft Office Specialist certification exhibits your expertise to work with Microsoft Office programs. Individuals who hold the MOS certification report increased competence and productivity with Microsoft Office programs as well as increased credibility with their employers, co-workers, and clients.
For more information:
http://www.microsoft.com/traincert/mcp/officespecialist
CORE EXAMS
Access 2003 Core 
Excel 2003 Core 
Outlook 2003 Core 
PowerPoint 2003 Core 
Word 2003 Core 