Here are the explaination to come from Lyon and Paris to Saint Etienne
*From Lyon Saint Exupery* : take the bus SATOBUS to *the railway station
Lyon part Dieu* (6,50€) you can buy the ticket on the bus
take the train TER to Saint Etienne Chateaucreux (around 10€) If you can
buy the ticket now it will be cheaper on
http://www.voyages-sncf.com*From Paris Charles de Gaulle*
Take the *RER B* to the center of Paris stop at the station *Chatelet
les Halles. *You can buy the ticket on the rer station.*
*Take the *RER D* to *Malesherbe* or *Melun *and stop at the station*
Gare de Lyon
*Take the train to Saint Etienne : it'll be cheaper if you buy your
ticket as soon as possible on
http://www.voyages-sncf.com*From Paris Roissy*
Take *ORLYVAL* to the station Antony (9,60€)
(http://www.ratp.fr/)
Take the* RER B* to *Charles de Gaule or mitry Clayes*
Stop at the station *Chatelet les Halles*
Take the *RER D* to *Malesherbe* or *Melun *and stop at the station*
Gare de Lyon
*Take the train to Saint Etienne : it'll be cheaper if you buy your
ticket as soon as possible on
http://www.voyages-sncf.comOR Take the Orly bus to Denfer rochereau (it's a litle bit cheaper 6,10
€ for the bus + 1,50 for the 2 RER)
Take the* RER B* to *Charles de Gaule or mitry Clayes*
Stop at the station *Chatelet les Halles*
Take the *RER D* to *Malesherbe* or *Melun *and stop at the station*
Gare de Lyon
*Take the train to Saint Etienne : it'll be cheaper if you buy your
ticket as soon as possible on
http://www.voyages-sncf.comI hope that it is clear enough, if not don't hesitate to ask