[2005] Expert with WebClient needed

[devGOD]

I'm in the process of converting over old coding to vb2005. The coding should login to the site, wait till execution is complete, then post to the post link page. I have some vb2005 coding below and under that my old working vb6 coding. so you can see from vb6 what i'm trying to do in vb2005

Dim web As New System.Net.WebClient()
Dim strPostData As String
 
        strPostData = "login_form_submit=1&admin=" + txtlogin.Text + "&password=" + txtPass.Text
        web.Headers.Add("Content-Type", "application/x-www-form-urlencoded")
        web.Headers.Add("Referer", "http://www.domain.com")
 
        Dim d As Byte() = System.Text.Encoding.ASCII.GetBytes(strPostData)
        web.UploadData("http://www.domain.com/index.html", "POST", d)
 
        [B]'Code Needed: Wait till execution of (login) is complete.
        'Code Needed: Goto and Open this page [url]http://www.domain.com/admin/updates.html[/url]
        'Code Needed: Wait till execution of webpage is complete.[/B]

this is what i use to do in vb6

Dim nUrl, strPostData As String
        strPostData = "login_form_submit=1&admin=" + txtlogin.Text + "&password=" + txtPass.Text
Inet.Execute "http://www.domain.com/index.html", "POST", _ 
strPostData, "Content-Type: application/x-www-form-urlencoded" & vbCrLf _
"Referer: http://www.domain.com" & vbCrLf
 
    Do
        On Error GoTo Err:
        DoEvents
    Loop Until Inet.StillExecuting = False
 
nUrl = "http://admin.domain.com/?OPERATION=1&ADMIN="
 
Inet.OpenURL nUrl + txtSN.Text + "&SUBJECT=" + txtSub.Text _
+ "&MESSAGE=" + txtmsg.Text + "&POST.x=46&POST.y=5"
 
    Do
        On Error GoTo Err:
        DoEvents
    Loop Until Inet.StillExecuting = False
 
Msgbox "Done!"