I went to this show last year, it's pretty big. Other than the show's in Concord and Manchester this is about the only other one that's worth going to. Here's a link to the flyer for the show;
http://users.erols.com/fasttrack/loc/wil/Wil-flyer-march-09.pdf
http://users.erols.com/fasttrack/loc/wil/Wil-flyer-march-09.pdf