If the starter motor turns the engine when you jump the solenoid, either the solenoid is not being engaged, or the solenoid contacts are not making the connection from the battery to the starter. If you have a good charged battery, and hear (and feel) the solenoid click, the solenoid may be bad. Can you connect a voltmeter or test light to the starter side of the solenoid? If you get voltage (test light lights) when you hit 'start' solenoid is okay. If not, solenoid is bad. Out of the box bad parts happen. Remove the spark plug wire before testing to prevent unexpected starting, let's be safe.
Brian, May 2007