Try also "Via Francìgena" on Google, Yahoo or even MSN. It is the network of old medieal roads that would start from various border points (France and Austria) and converge to Viterbo - the City of Popes - and from there on the Via Cassia to Rome.
I have crossed paths with the Via Francigena a few times, it's mostly country lanes nowadays. I suggest 100.000 scale maps
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Maurizio
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Maurizio
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