Hi,
there are some programs out there which are used to hide programs or archives from being detected by webspace-providers who want to prevent others from saving WareZ material on their servers and therefore only allow their users to save pictures and documents.
These special programs simulate an archive or program to be a picture by adding a picture in front of it (don't know exactly the real method).
So these "pictures" can be saved undetected on the free-webspace servers and the real content can be extracted again by these programs after downloading the file.
Maybe you've got such a file, which in real case is an archive or program.
The integrated content (especially archives) often are password-protected.
so long