Rachel - do you mean at an admin user level or at a programatic level??
if you mean the former, then you'd navigate to Admin/ManageDepartments.aspx (while logged in as an admin user) and just insert the new department from there. if you mean programatically, then you'd invoke the
BLL.Store.Department.InsertDepartment("New Department", 0, "This is a new department", "path to imageurl");
method from wherever you needed to add it from.
jimi
http://www.originaltalent.com