Friend Delete program

[~Shieru No Tamashi~]

As Christian requested, I am trying to make a friend deleter for Gaia, and that's what I put in VB.NET:

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        WebBrowser1.Navigate("www.gaiaonline.com")
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        WebBrowser1.Navigate("www.gaiaonline.com/friends")
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        Dim HTMLcode, HTMLcode1 As String
        HTMLcode = WebBrowser1.DocumentText
        HTMLcode1 = HTMLcode.Replace("flag;", "true;")
        HTMLcode1 = HTMLcode.Replace("Remove Friend", "True")
        RichTextBox1.Text = HTMLcode1
    End Sub


End Class

I was wondering how I could load the HTMLcode1 (where values are replaced) in the current WebBrowser, and if there is another way to do it.