There are shuttle services (especially during the winter) that take you from Spokane to Sandpoint. Once you're in Sandpoint getting around and to the mountain isn't hard. A shuttle runs all day long at the base of the mountain to take you to the slopes, and is about 3 miles from the middle of Sandpoint. During the winter I know their are shuttles that work with the hotels to get people from Sandpoint to the base, and then there is also a new local shuttle with one of the stops at the base.
PowderHound and TreeNinja