Transportation from FCO Rome Airport to Prima Porta Rail Stat

Take Leonardo Express from FCO to Termini. Then take the Metro A (direction: Battistini). Get off the metro at Flaminio-Piazza del Popolo (it's the metro station after the Spanish steps). Go to the Flaminio station and from there take a train going to Viterbo or Montebello on the Roma-Viterbo Urban train. Get off at Prima Porta. Most of the cost will be the Leonardo Express (14 euro). Altogether won't be more than 20 euro or around there. Below the timetable of the Roma-Viterbo http://www.agenziamobilita.roma.it/attachments/2354_orario_invernale_2011.pdf

Thank you so much, very helpful, Mahalo, Marilyn