Dim req As HttpWebRequest = CType(WebRequest.Create("http://fantagazzetta.com/download.aspx"), HttpWebRequest)

req.Method = "POST"

Dim postData As String = "key=voti&g=3"
Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)

req.ContentType = "application/x-www-form-urlencoded"
req.ContentLength = byteArray.Length

Dim dataStream As Stream = req.GetRequestStream()
dataStream.Write(byteArray, 0, byteArray.Length)
dataStream.Close()

Dim resp As WebResponse = req.GetResponse()

dataStream = resp.GetResponseStream()
Dim encode As Encoding = System.Text.Encoding.GetEncoding("utf-8")
Dim reader1 As New StreamReader(dataStream, encode)
Dim responseFromServer As String = reader1.ReadToEnd()

reader1.Close()
dataStream.Close()

Dim decodedString As String = Server.UrlDecode(responseFromServer)