You will know if you hit one when the message is full of strange characters that make no sense. These articles need to be unencoded before you can use them. This is standard practice for files that need to remain in a specific state such as executables for tools or games and gif or jpg files for pictures. WinVN is able to decode these articles and put them in a usable state. This means that when you decode this article you will have a file named game.zip and that this article is the first of 15 parts.
Most games are to large to put into one file.
One problem with this is that through all the propagation of the files sometimes parts will get lost, not much we can do about this. Because of the size of all the groups on the new server articles typically do not stay around for more than a week before being purged. Under the Articles menu select Decode articles. This brings up a mail dialog box and automatically attaches your name to the post. You fill in the Subject, text and any attachments if necessary.