Microsoft continues to dominate most desktops in U.S. business. Its Windows operating system boasts more than 91% market share, according to March figures from and Microsoft has seen accelerated interest in the latest revision,  

"Microsoft continues to leave its computing fingerprints on most desktops," says Forrester Research analyst Sheri McLeish.

IT professionals who become a (MCTS) can prove their abilities around implementing, building, troubleshooting and debugging specific Microsoft technologies, such as a Windows operating system, Microsoft Exchange Server, Microsoft SQL Server and Microsoft Visual Studio. ( this 9 year-old, who's working on his fifth Microsoft certification.) 

"In terms of training and certification, we have seen the fastest ramp up on Windows 7 than any technology in the past five years," says Chris Pirie, general manager of sales and marketing for Microsoft Learning. "We are anticipating a big wave of desktop refreshes and we will be having a new wave of Office software this summer. Certification is very hot for us right now."