i am 45 and would like to get into shape using weightlifting what would be the best kind of program # reps #sets streching running would be best?

UncleTJ: Read some of the questions that have already been asked here. You'll find a tremendous amount of information to answer your questions.

There is not a set "best" for anything, it's figuring out what is best for you. Have a search around the forums, I'm sure you will find many threads answering your questions, like Adler said.