hey all, just thought id give some advice since i was just down there a couple of weeks ago (weekend drive from rochester, ny... looooong).
anyway, there's a really cheap hotel ($55/night including taxes after AAA discount), it's a Super 8, about a half hour outside of downtown Chicago, in East Hazel Crest on Halsted St. It was very basic, but clean.
Also, if you plan on going to the Shedd on a Sunday, be aware of football games at Soldiers Field. There's a schedule on the Shedd website for days that there are games going on, because you won't be able to park at the aquarium. We ended up parking in a garage (monroe parking garage - $12) and taking one of the game shuttles to the aquarium.
Traffic into the city isn't all that bad, nowhere near as bad as NYC or Boston, although expect delays if there is a game.
Here's a few teaser pictures...
Driving into Chicago (near the aqarium/soldier field)
Walking to the aquarium from the shuttle, dropped off right next to soldier field
Outside the Shedd
One of the reef exhibits... no flash photography + me playing with camera settings to get a good picture = blurry picture :-(
you can check out the rest of our pictures here (shedd aquarium and narbc show):
http://community.webshots.com/user/misslissapics