If you want to teach computer applications, specifically Microsoft Office stuff, you might indeed want to pursue the Microsoft Office Specialist (MOS) certification. But this is a collection of certifications that start at individual entry level qualifications, for Microsoft Word, Excel, Outlook, PowerPoint, Access, and Project, then go on to Expert, Master, and Master Instructor levels from there. You can find a complete matrix of all of this stuff at here, which will give you a good idea of what's involved in getting where you want to be. You'll have to take a sizable number of exams (at least a dozen, often more) and spend at least 18 months to work yourself into a place where you can qualify as an instructor. But because Microsoft Office remains the most widely used office productivity suite world-wide, it's also a great place to focus your personal and professional development efforts, because it will open opportunities to you anywhere you might wish to work.
This was first published in May 2006