login to my hotmail account http post Help

hello i can't figure out how to set cookies im trying to login to my hotmail account using send postdata here is the code im using

Code:

 Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Data
Imports System.Drawing
Imports System.Linq
Imports System.Text
Imports System.Windows.Forms
Imports System.Net
Imports System.IO
Public Class Form1
    Inherits Form
    Public Sub New()
        InitializeComponent()
    End Sub
    Private Function Post(ByVal url As [String], ByVal postData As StringBuilder) As [String]
        Dim request As HttpWebRequest = Nothing
        Dim uri As New Uri(url)
        request = DirectCast(WebRequest.Create(uri), HttpWebRequest)
        Dim cookies As New CookieContainer()
        request.CookieContainer = cookies
        request.Method = "POST"
        request.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
        request.UserAgent = "User-Agent=Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.0.7) Gecko/2009021910 Firefox/3.0.7"
        request.Referer = ""
        request.ContentType = "application/x-www-form-urlencoded"
        request.ContentLength = postData.Length
        Using writeStream As Stream = request.GetRequestStream()
            Dim encoding__1 As New UTF8Encoding()
            Dim bytes As Byte() = encoding__1.GetBytes(postData.ToString())
            writeStream.Write(bytes, 0, bytes.Length)
        End Using
        Dim result As [String] = ""
        Using response As HttpWebResponse = DirectCast(request.GetResponse(), HttpWebResponse)
            Using responseStream As Stream = response.GetResponseStream()
                Using readStream As New StreamReader(responseStream, Encoding.UTF8)
                    result = readStream.ReadToEnd()
                End Using
            End Using
        End Using
        Return result
    End Function
    Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
 Dim postData As New StringBuilder()
        postData.Append("idsbho=1&PwdPad=IfYouAreReadingThisYouHaveTooMuch&LoginOptions=2&CS=&FedState=&PPSX=P&type=11&login=" & TextBox1.Text & "&passwd=" & TextBox2.Text & "&remMe=1&NewUser=1&PPFT=B061G7CYgDwaI7oZXPMQVWyK3l7lOmRhw8VRtYkipEuUvOR78uTNc9bxmdG9htL5U3*Lwfk7VDXL0Od8Gx9aMu5ukoa6urOfKIC0BQogayY7feR6OUoze4Th6bunMoxybmEB5ZYb0D5*7iBEesaFt0h6x1GfVJTrvAI3kYI%24&i1=1&i2=2")

Dim result As [String] = Post("http://login.live.com/login.srf?wa=wsignin1.0&rpsnv=10&ct=1239664567&rver=5.5.4177.0&wp=MBI&wreply=http:%2F%2Fmail.live.com%2Fdefault.aspx&lc=1033&id=64855&mkt=en-US", postData)
     End Sub

End Class

every time i send the data it returns ""Cookies must be allowed""
i have Googled for while now and can't figure this out how do i set cookies so i don't get this error ?
thanks! to anyone who can help me out on this