Time to seek education and certification in the area of whatever is of most insterest to you. Are you interested in working with networking? Server hardware and software support? Routers? Application development? What direction do you wish to pursue?
The best way is to prove you have up to date knowledge of IT. Certifications is one thing and updating your skillset and experience is another. For instance, if you knew COBAL you will have to start learning RPG or java if you still want to work with mainframes.
Depends on your interests really. You were in the mainframe world 14 years ago, do you want to go back to the compter work now? Things have changed quite a bit. You might want to explore other fields besides computers. Finance, nursing, etc.