Hi,
If you are interested in asp.net and c#, that the most suitable certification for you could be PRO: Designing and Developing ASP.NET Applications Using the Microsoft .NET Framework 3.5
For this exam you must pass 3 exams:
70-536 - TS: Microsoft .NET Framework – Application Development Foundation
70-562 - TS: Microsoft .NET Framework 3.5, ASP.NET Application Development
70-564 - PRO: Designing and Developing ASP.NET Applications Using the Microsoft .NET Framework 3.5
More information about exams you can find here:
http://www.microsoft.com/learning/en/us/certification/mcpd.aspx#tab2[
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Regards
Robert