What About Your Skills?
Let’s say you work in IT support. A resume is a way to confide other people in your competence. So, what skills should you mention?
1. Windows OS, Mac OS, and Microsoft Office;2. Mainly, computer servers you used to work with;3. Soft skills (tell them you're a great communicator, you can solve conflict situations and have advanced analytical expertise).
Soft skills can be your way to a job-changing. Even with zero experience in IT, you should use them to express potential and, again, a value you'll bring to a company.
You may consider the position of IT consultant. In that case, resume has to show you as an open-minded applicant, who is capable to deal with different issues. On the contrary to desktop support, you need to have some sales experience to convince people and not overwhelm them with tons of characteristics.