Where can I get Virtual Dub?

And I did save it to attempt to capture the pictures, but it won't let me. I even tried to open it in Animation Shop, but it won't let me open it there.


Edit - does anyone know how to change the file type? The reason it won't open in Virtual Dub (I found it and downloaded it) is because it's saved as a Windows Media file, but it won't save as anything else.