web browser control in vb.net

I tried to display a web page in web browser control

WebBrowser1.Navigate(New Uri(webadd.ToString()))

please let me know whether there is possibility of editing the html page displayed in web browser control (by accessing view->source)

Some text (eg

Updated by:xx

) has to be included in the web browser control apart from the web page that is displayed.

Let me know if there are any ideas for performing this.