If you are aiming at getting certification for the Windows Server 2008 technology track, you will still need the following to complete.
Exam 70-642: Windows Server 2008 Network Infrastructure, Configuring
Exam 70-646: Windows Server 2008, Server Administrator
With the above exam completed, you will attained the MCSA: Windows Server 2008 title. [More details - http://www.microsoft.com/learning/en-us/mcsa-windows-server-2008-certification.aspx]
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Your next step would probably be getting the study references, play more with your lab machine and trying out various scenarios.
Cheers.
Please remember to mark the replies as answers if they help and unmark them if they provide no help. Milton Goh