I'm afraid the Webbrowser won't take a picture from a stream (there are obscure methods, like placing the image content in the dcument BASE64-encoded... i don't know about them).
You could save the image to a temporary file and tell the WebBrowser to load it from there.
@Holger: Das ist nicht das was er sucht
Lukas Erlacher
Suche Grafiktablett. Spenden/Gebrauchtangebote willkommen.
Gotteskrieger gesucht!
For it is the chief characteristic of the religion of science that it works. - Isaac Asimov, Foundation I, Buch 1