Ah - at the interview is the place to extoll your virtues as mature, timely, committed, exhuberant, and experienced.
I recently changed careers - had to do some schooling to get back into the office field. Landed an internship at a law firm (my goal was paralegal through schooling). At the end of the semester, all the companies that had brought in an intern met and most of them had horrible experiences: always late, using personal phone, not willing/able to learn. My boss came back from that meeting and said she had been singing my praises all day - whenever the other bosses said something negative, she said not our intern. Age. Age was my benefactor. I had to prove it. I sweated through the interview (and I mean literally rolling down my back). But I was prepared and got the internship. I am now a paid employee, with on the job training for paralegal - much better than paying for school, eh?
Don't let age scare you. They might think they want fresh blood, when they really need experience. Hiding your dates of employment, years on the job, etc. only opens the door. Then you have to sell your wares.
Again, I wish you good luck and good hunting.
