The only POP newspaper I'm aware of is a weekly, "El Faro". its office is on JFK, almost at the intersection of Avenida Colon; the phone # is in the book. Unless you're very fluent in Spanish, I suggest that you write out your proposed ad in Spanish, in advance. Have a bilingual DR or foreigner proofread it for you; long hand should be O K. After you have the ad in hand, I suggest you visit the office personally, to get the ad correctly published & to pay. Good luck. It should work out.