Kropla.com
Information on the voltage and the types of plugs used in France.
http://www.kropla.com/electric.htm

Parisinfo.com
Gives you the lowdown on TV, DVD and electricity standards in the country.
http://www.parisinfo.com/guide_paris/rub5956.html

Things 2 Do in Paris.com
Information on everything from opening hours and electricity voltage to tipping and public holidays.
http://www.things2doinparis.com/CityGuide.php/category.26#26

Walkabout Travel Gear
A guide to the plugs and voltage prevalent in France.
http://www.walkabouttravelgear.com/wwelect.htm

Worldweb.com
All about electricity in France.
http://www.alsace.worldweb.com/TravelEssentials/Electricity/8-478.html