ага, а там нет login.php? а вот что выдаёт снифер
__LASTFOCUS=&__VIEWSTATE=%2FwEPDwUKMTc1MDY4NzQwMmQYAQUeX19Db250cm9sc1JlcXVpcmVQb3N0QmFja0tleV9fFgEFI2N0bDAwJENvbnRlbnRQbGFjZUhvbGRlcjEkQ2hlY2tCb3gxQPL8JOuSxpJYh7qegU9qKZsyX4s%3D&__EVENTTARGET=&__EVENTARGUMENT=&__EVENTVALIDATION=%2FwEWBQLmqviTAwLpmY5QAuX544cIAv7Oo7YEAoDiyWOKg%2BC2kdkR1LIVMFTFq%2Fa8Uw%2Bb1w%3D%3D&ctl00%24ContentPlaceHolder1%24TextBoxLogin=1111&ctl00%24ContentPlaceHolder1%24TextBoxPassword=%D0%B9%D0%B9%D0%B9%D0%B9%D0%B9%D0%B9&ctl00%24ContentPlaceHolder1%24Button1=%D0%92%D1%85%D0%BE%D0%B4+%D0%B2+%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%83

это прям сплошняком вписывать в компонент XMLHttpRequest?