Anybody can help me how to get this picture to my picture box in my form1?

<ul>
<li style="background: none repeat scroll 0&#37; 0% transparent;">
<div class="serviceload">
<img src="http://website/pic/10.png" alt=""> </div>
</li>
</ul>

The problem with this picture is that it changes like every hour.
So the name of the picture changes also to blabla.png or hello.png or 2.png

I hope somebody has the time to help me out on this 1.

Thanks

I know i can do it like this:
But this gives me only 1 picture.
Code:
   Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        LoadWebImageToPictureBox(PictureBox1, "http://website/pic/10.png")
    End Sub

    Public Function LoadWebImageToPictureBox(ByVal pb _
  As PictureBox, ByVal ImageURL As String) As Boolean

        Dim objImage As MemoryStream
        Dim objwebClient As WebClient
        Dim sURL As String = Trim(ImageURL)
        Dim bAns As Boolean

        Try
            If Not sURL.ToLower().StartsWith("http://") _
                 Then sURL = "http://" & sURL
            objwebClient = New WebClient()


            objImage = New  _
               MemoryStream(objwebClient.DownloadData(sURL))
            pb.Image = Image.FromStream(objImage)
            bAns = True
        Catch ex As Exception

            bAns = False
        End Try

        Return bAns

    End Function