Вот так будет на билдере:

GET http://www.host.ru HTTP/1.0\r\n
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*\r\n
Accept-Language: ru\r\n
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)\r\n
Content-Type: application/x-www-form-urlencoded\r\n
Host: www.host.ru\r\n
\r\n