IE, HttpUDF. Логин на сайт.
$oHTTP = ObjCreate("WinHttp.WinHttpRequest.5.1")
$oHTTP.Open("POST", "http://xxx.ru/login.html")
$oHTTP.setTimeouts(5000, 5000, 15000, 15000)
$oHTTP.SetRequestHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8")
$oHTTP.SetRequestHeader("Accept-Language", "ru")
$oHTTP.SetRequestHeader("Referer","http://xxx.ru/login.html")
$oHTTP.SetRequestHeader("Content-Type","application/x-www-form-urlencoded")
$oHTTP.SetRequestHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)")
$oHTTP.SetRequestHeader("Host","xxx.ru")
$oHTTP.SetRequestHeader("Proxy-Connection", "Keep-alive")
$oHTTP.Send("login=Vasya&pass=123")
$oHTTP.WaitForResponse