One of the great Bible conferences in the United States, and probably in the world, is the annual Founder's Week of the Moody Bible Institute here in Chicago. Dwight Lyman Moody originally started this week as a "day for snow sledding for the children"...and it has come a mighty long way since then.
Here's the link:
www.moodyconferences.com Then click on Founder's Week. You should also be able to "connect" and join the conference at www.moodyradio.org