Grenoble is surrounded by high mountains and since the EMLC2007 is in January the time is perfect to go skiing.
Beside the train main station (Gare SNCF) there is the bus station (Gare Routière) where you can buy a bus ticket to go to the mountain.
The tourist office of Grenoble recommended to go to Lans en Vercors. There you can rent the ski equipment.
08:00 h and 10:00 h (Saturday/Sunday)
Grenoble Bus Station (Gare de Routiere)
15:10 h and 18:;10 h (Saturday/Sunday)
More information (in French) at: http://www.vfd.fr/to01sk.htm