OP,
If you are serious about getting into the IT field, there are a few things you have to know and do. Here are the impressions I get from your post.
1. You don't have current skills in IT right now. You have probably dabbled with computers but you are no expert.
2. You have no formal training in computers.
3. You have no formal education in computers.
If you want to get to that kind of salary level, you will need to get a degree, no doubt about it. Sure, people without degrees can get jobs like what you want, but they are few and far between. Now, you say you want to build/repair systems. Thats a good thing because you are going to be doing that for a few years to build your experience. Lastly, you are going to need a couple certifications like the A+, Network+, CCNA, MCSA, or something along those lines.
As someone who has done hiring in IT, there are 3 qualifications that all hiring managers look at when it comes to hiring in IT.
1. Experience - The most important. Having 10 years working on servers and networks will get you very far. However, in order to get that kind of experience, it requires a couple years working for lower paying jobs working on computers, doing help desk support, and so on. No matter if you have a degree or certifications or not, you will need to work your way up the ladder.
2. Education - A solid bachelors degree in computer information systems will help huge. The biggest thing it does is opens doors for you. The first lower paying job you will make more at which makes the job more tolerable.
3. Certifications - They bolster the top 2 qualifications, but never replaces them. There used to be a time where you could get your MCSE and make 100k a year without experience or education. Those times are over. Now certifications help build on experience and education.
I don't know how old you are, so I don't know what your time frame is or money situation. I will assume you have been working full time up until now doing something else in a different field. Here is what you do.
1. Apply to go to college part time.
2. Find a part time job or full time job working in technology somewhere. It will be a low paying job but you can find one doing hardware/software support on a helpdesk or building computers.
You should work toward your college degree and continue to work hard at your job to get experience. Certifications can also help if you can fit them in. Getting your A+ and Network+ are good starter certs.
You will not be making 60k in a short period of time. It will take you 6-10 years at least for you because you don't have the experience or education or certs right now. It will take a while, but you will get there. The question is, how hard do you want to work to get there?