Hi all I am new in this forum and have just joined yr group.
I have been planning to take some IT CERTIFICATION, this will add an extra feather in my cap.I have decided to take MCDBA. I have already some hand in knowledge in SQL. Will any one suggest me which exam should I start with.

Well according to this page:
http://www.microsoft.com/learning/mcp/mcdba/requirements.asp

You have to do 3 core exams. One on SQL Server Administration, one on SQL Server Design and one on Networking Systems. For the first two categories, there are only one choice in each area so those are the ones you will have to do. As for the third section, that would depend on what version of Windows you want to pick up the knowledge in - Win 2000 or Win 2003.

If you meant which one do I go for first -
Server Administration, Server Design or Networking Systems. Just go for whatever one your feel you would enjoy the most. Start on your most comfortable subject.