It depends on what track you want to get into IT on. If you want to start in programming then yes, you most likely need more schooling. With the glut of applications most companies are seeing these days you will have trouble even getting an interview without a BS in EE/CS or something similar.
That said it sounds like you are comfortable with the hardware end of things, and if you would like to pursue that track the degree requirements tend not to be as stringent. Most of the network engineers/ops positions at my company are people with certifications, be they CompTIA, Cisco, M$, etc. They aren't any less skilled at their positions, but the networking world tends to place more value on results than degrees, in my experience. So assuming you want to stay on this track I would suggest starting with certs. You can always work your way sideways into a dev position if that's what you want to do, but that's the easiest way to get your foot in the door AFAIK.