Imports System.Net
 
Dim url As String = "http://einserver.de/bild.jpg"
Dim reg As WebRequest = HttpWebRequest.Create(url)
Dim response As WebResponse = reg.GetResponse()
 
Using s As Stream = response.GetResponseStream()
  Dim img As Image = Image.FromStream(s)
  ' Hier Bild weiter verarbeiten...
End Using

Ralf