What major do I need to take in order to be an computer technician?

I'm graduating high school this year and I'm going to a technical school near by to take my required classes and plan on transferring to a college after 2 years at tech. I didn't want to proclaim a major my first year, but they say i have to choose an active program in order for them to process my files. I want to become a computer technician that works for Dell, Time Warner or some other big company that needs computer specialists that answer the phones and talk people through fixing their computer or either the one that actually goes out to the persons home and fixes the computer right there. So I looked on their site and the 2 year degrees are; Computer Technology-telecommunications system management, Electronics Engineering Technology- Electronic Program of Study, and Electronic Engineering Technology- Networking Program of Study. I don't know if there is a major in Computer Science. The problem is that I don't know which major to choose to become a computer technician. So which one would be best to chose? Also does this major involve a lot of math?