WebCopy.Items.Clear;
with WebCopy.Items.Add do
begin
  Protocol := wpMultiFtpUpload;
  URL := 'c:\directory\myfiles\*.txt';
  FTPHost := ftp.myserver.com;
  FTPUserID := myuserid;
  FTPPassword := mypassword;
  TargetDir := ftpserverdir;
end;
WebCopy.Execute;