Microsoft Certified Technology Specialist.

MCTS stands for Microsoft Certified Technology Specialist.

Demonstrate your specialized technical expertise with a Microsoft Certified Technology Specialist (MCTS) certification. By earning this certification, you can prove your ability to successfully implement, build on, troubleshoot, and debug a particular Microsoft technology, such as a Windows operating system, Microsoft Exchange Server, Microsoft SQL Server, and Microsoft Visual Studio.

Level:	One or more years of experience implementing, troubleshooting, and debugging a specific technology
Audience:	IT professional
Type:	Microsoft Certification

It has sever papers,

Web based application(70-528)
Windows based application(70-526)
Web service (70-529)
SQL Server 2005(70-431)

just check the listed links by Microsoft 

http://www.microsoft.com/learning/en/us/certification/mcts.aspx

http://www.microsoft.com/learning/en/us/certification/mcts.aspx#tab2