The area of the excavations in Pompeii can be easily reached thanks to public transports, for example circumvesuviana trains (http://www.vesuviana.it/Reteeorari).
You can use the highway Napoli-Salerno (http://www.autostrade.it/autostrade/rete.do?op=caselli&cod=A03) to reach the excavations with your car or by taxi. In this page there are also links useful if you want to rent a car or a motorbike. If you want to visit the isles of Capri and Ischia, here you will find also links useful to rent a boat.
The nearest airport is Capodichino in Naples: list of flights. When you arrive to Naples airport, you can choose a taxi, rent a car or use the circumvesuviana train to reach the excavations or the main towns of vesuvian area.
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Testi Ettore Panella