A 52-year old retired Newton insurance agent could end the century by becoming a millionaire. Sid Gimre won’t be on T-V with Regis Philbin, but he is one of finalists in a credit card contest that’s giving away one-million dollars.Each time he used his Discover Card he got a chance to be chosen for the contest. Gimre and his wife fly to New York today. Friday morning at 9:30 all the finalists will gather in Times Square and one name will be drawn to win the million bucks. Gimre has know for a week that he’s a finalist, but it hasn’t sunk in.Gimre won’t go away empty handed if he doesn’t win the big prize. He’s already won 25-thousand dollars for being chosen as finalist.