The Microsoft Certified Systems Engineer (MCSE) certification shows clients and employers that you are skilled in designing, implementing, and administering infrastructures for business solutions based on Windows Server 2003 and Microsoft Windows 2000 Server.
MCSE website has details about Certifications, Upgrade Paths, MCSE requirements, Learn about MCSE specializations, MCITP certification, Certification Resources etc
Web : http://www.microsoft.com/learning/en/us/certification/mcse.aspx