Hi there welcome to Chicago! Just keep this message board under your favorites to see where every one will be riding etc. Sorry to Spam people: http://chicagowindchasers.com/?page_id=36
Here is a map of some of the Chicago Area kiteboarding locations. There is one location in the city at Montrose Beach: http://chicagokitesurfing.com/kiteboarding_messageboard/viewtopic.php?f=3&t=9791
read all the information about the spot on the link.
Kiteboarding in Chicago means lots of driving to catch the best wind here in the area. I was used to drive only 40 min max before I moved here from the Netherlands. Now for some spots I am driving for about 2 hours or even longer! The best way to get more information, join us for snowkiting this season. Meet the people and have fun!
If you have any other questions feel free to drop me a PM. By the way what part of France are you from?