The file type is still an application for the connection_patcher.exe even if it does not show one if you go to properties you will see it is executable still, you can run this in command prompt I do all the time by declaring the path to the file and file name.
You can download the file on piratebay by going to google and putting piratebay into the search then search for world of warcraft and download the 3.3.5a client from that site or others like it. If you cannot find one let me know and I will send you a private message with a link for the client.