There is a shortage of people, so companies recruit from classes and are even willing to train you. This is great for people making a career change. All types - everybody uses computers. Small businesses need IT expertise, while many big companies have in-house IT departments, or outsource to an IT service company. Accounting firms, law firms, real estate companies, escrow companies, retail stores - even a chain of video stores has 4 or 5 computers.
Computer networks are everywhere.
No matter what background you have, PC knowledge is always an asset. It will allow you to perform better even if you are not working in the technology field. Lawyers, accountants, anyone can benefit. Knowledge of computers has become essentially important for hardware and software engineers too. The company itself defines title.