Looks like Bruce is right -- here is the 2007 schedule on their website:
Winter 2007
January 5-7 BALTIMORE Maryland State Fair - Timonium, MD
January 12-14 COLUMBUS Ohio Expo Center & State Fair - Columbus, OH
January 19-21 INDIANAPOLIS Indiana State Fairgrounds - Indianapolis, IN
January 26-28 ATLANTA Georgia International Convention Center - College Park, GA
Februray 2-4 KANSAS CITY Overland Park International Trade Center
Overland Park, KS
Februray 9-11 ST. LOUIS Gateway Center - Collinsville, IL
Februray 16-18 SOMERSET Garden State Exhibit Center - Somerset, NJ
Februray 23-25 MILWAUKEE Wisconsin Exposition Center - Milwaukee, WI
March 2-4 ST. PAUL RiverCentre - St. Paul, MN
March 9-11 OPEN
March 16-18 CHANTILLY Dulles Expo Center - Chantilly, VA
March 23-25 TAMPA Florida State Fairgrounds - Tampa, FL
March 30 - April 1 HOUSTON Reliant Park - Houston, TX
April 5-8 Easter
April 13-15 PLEASANTON Alameda County Fairgrounds - Pleasanton, CA
April 20-22 SACRAMENTO Cal Expo - Sacramento, CA
April 27-29 SEATTLE Puyallup Fairgrounds - Puyallup, WA
May 4-6 POMONA Fairplex - Pomona, CA
So, unless they put it in the open March 9-11 slot, looks like Atlanta is the closest and then Chantilly, VA
Rob