Service in vb.net that needs to login to an asp page

[slr]

I am writing a service that needs to login into a .asp page This is what I was attempting but.... it did not work. Any help would be great. Thanks scott

Dim wc As New Net.WebClient 'the webclient
    Dim bt() As Byte 'the returned bytes
 
    'setup fields to be sent
    Dim fields As New Specialized.NameValueCollection
    fields.Add("j_username", "sls") 'search option
    fields.Add("j_password", "ssfsssfs") 'search box
    fields.Add("LogIn", "") 'button pressed
 
    bt = wc.UploadValues(URL, fields) 'send fields and retrieve response
    html = System.Text.Encoding.ASCII.GetString(bt) 'convert to text