I've been working straight since yesterday trying to get this to work. I'm a noob to RegEx

 <script type="text/javascript" src="[URL="http://www.blackhatworld.com/blackhat-seo/view-source:http://www.google.com/recaptcha/api/challenge?k=6LemUQQAAAAAAC6mNwmiXb8ZwmUU0R9Z5v_yZ5xl"]http://www.google.com/recaptcha/api/challenge?k=6LemUQQAAAAAAC6mNwmiXb8ZwmUU0R9Z5v_yZ5xl[/URL]">

Of course this line changes since it's a captcha so I only need to grab the link up to the k?= location.

I can do this using the web browser control but I'm attempting to speed things up by using a webrequest.

Any ideas on the RegEx software or how to grab this exact line?

Thanks

EDIT: Might help if you see my code as well so here goes it:

[CODE]       Dim request As System.Net.HttpWebRequest = System.Net.HttpWebRequest.Create("http://hubpages.com/user/new/")
        Dim response As System.Net.HttpWebResponse = request.GetResponse
        Dim sr As System.IO.StreamReader = New System.IO.StreamReader(response.GetResponseStream)
        Dim rssourcecode As String = sr.ReadToEnd

        '("src=([""'])(.*?)\1") 
        '<script type=""text/javascript"" src=""http://www.google.com/recaptcha/api/challenge?k=.*/"">
        Dim r As New System.Text.RegularExpressions.Regex("<script[\s\S]*?/script>")
        Dim matches As MatchCollection = r.Matches(rssourcecode)
        For Each itemcode As Match In matches
            TextBox1.Text = TextBox1.Text & itemcode.Value & vbNewLine
        Next