His web site is pretty jammed up, but I sent an email already.

DC Office:
212 Cannon House Office Building
Washington, DC 20515-4002
Phone: 202-225-2452
Fax: 202-225-2455
Email: Joe.Wilson AT mail.house.gov

District Office - Beaufort:
903 Port Republic Street
Beaufort, SC 29901
Phone: 843-521-2530
Fax: 843-521-2535
District Office - Columbia:
1700 Sunset Boulevard (United States 378), Suite 1
Post Office Box 7381
West Columbia, SC 29202
Phone: 803-939-0041
Fax: 803-939-0078