/// <summary>
/// method to create a new local Windows user account
/// </summary>
/// <param name="username">Username of the new account</param>
/// <param name="password">Password of the new account</param>
/// <param name="displayName">Account display name</param>
/// <param name="description">Account description</param>
/// <param name="canChangePwd">Value of whether the new user can change their password</param>
/// <param name="pwdExpires">Value determining if the password ever expires</param>
public static bool CreateLocalWindowsAccount(string username, string password, string displayName, string description, bool canChangePwd, bool pwdExpires)
{
  try
  {
    PrincipalContext context = new PrincipalContext(ContextType.Machine);
    UserPrincipal user = new UserPrincipal(context);
    user.SetPassword(password);
    user.DisplayName = displayName;
    user.Name = username;
    user.Description = description;
    user.UserCannotChangePassword = canChangePwd;
    user.PasswordNeverExpires = pwdExpires;
    user.Save();
    //now add user to "Users" group so it displays in Control Panel
    GroupPrincipal group = GroupPrincipal.FindByIdentity(context, "Users");
    group.Members.Add(user);
    group.Save();
    return true;
  }
  catch (Exception ex)
  {
    MessageBox.Show("Error creating account: {0}", ex.Message);
    return false;
  }
}