@spivonious: I am self employed and have worked for several employers in a very short space of time and am inured to interviewing, and getting the job. In fact sometimes I am hired over the phone.
In general I tend to get every job I apply for having being rejected only once or twice because for it is all about experience.
I think it more important to show you have resolved a variety of problems for whoever you work for rather than certification. That almost always bolsters your employability prospects.
If you don't have a college degree, then certification is a way to imporove the certification section on your resume, but I am sure even Microsoft will not employ you if you have 10 of their certificates without a degree, which is a shame because they do teach you quite a lot of useful stuff nowadays, unlike years of yore..