The capacitor is for suppressing radio interference, you can install or leave it out. Get a starter that matches the wattage of your lamp. The starters will often operate over a wide range. You can actually test the rest of the light fixture (carefully) if you briefly short across the starter wires and see if the light comes on. That's what the old style push to start fluorescent desk lamps do. You can get tiny crimp connectors form your local Radio Shack for the small wires but soldering will do.