Microsoft Certified Systems Engineer.

Normally considered short for Minesweeper Consultant and Solitaire Expert or Must Consult Someone Experienced.

As seen in the "ScaryDevilMonastery", here are a few more alternatives:
Mozilla Couldn't Stomach Explorer
"Mayday", Call Some Experts
Management Can't Send E-mail
Making Computers Spew Errors
Moron Confused by Sun Equipment
Mail Consumed Somewhere in Exchange
Marginal Computer Software Enthusiast
Most Computers Suck Eggs
Minion of the Crappy Software Empire