Debbie queried the cost of the RER.

This site (updated in 2005) outlines the costs of various options. It will be a little higher - the Roissybus cost today is 20cents higher than the website. http://www.epinions.com/content_3100352644

See also this site for specifics of shuttle bus locations, etc.: http://tinyurl.com/7srmb

Frances Toronto, Canada