Microsoft Certified Professional Developer (MCPD) is the big certification for developers.
There are versions they describe as "MCPD on Microsoft Visual Studio 2010", "MCPD on Microsoft Visual Studio 2008" and "MCPD on Microsoft Visual Studio 2005", but really, you should read those names as "MCPD on .NET 4.0", "MCPD on .NET 3.5" and "MCPD on .NET 2.0".
Then within those, there are versions for different types of development.
I would assume that you would be wanting to get certified as a web developer with .NET 4.0 (I don't think there's much value pursuing certification in an older version of the framework).
The Web Developer 4 version of the MCPD requires four exams:
70-515 is definitely the one to do first. This covers a broad range of web dev topics, and passing this one immediately gets you Microsoft Certified Technology Specialist (MCTS) certification.
70-513 and 70-516, take your pick and either do whichever one would be easier first (based on your knowledge of WCF and data access frameworks), or whichever one you feel would be most useful first. They will also each give you another MCTS certification.
70-519, do last. It's a more design-y exam whose only certification benefit is to complete the MCPD once you've done the other three.
And in a pre-emptive response to the "certifications are useless" crowd, don't forget that for companies to maintain Microsoft partnerships, they need a certain number of staff with a certain number of certifications. A Microsoft certification will give you a real and tangible advantage in getting employed by a company that seeks to maintain a Microsoft partnership.