Nursing Student Externships in Illinois

Hello,
I was trying to find some student nurse externship programs for the Summer of 2010 in the Chicagoland/ Northwest Suburbs area but am having a hard time finding any. Does anyone know of any other hospitals in this area that have an externship program? I have looked at a few hospitals websites, but nothing comes up. Just wondering if anyone had heard of any or even participated in any around this area.
Thanks!
Oh and I'm a current junior so this would be for the summer before my senior year (if that matters any).