HIDE A SECRET FILE IN A JPG FILE
*First step: place a picture, in a folder (a small size) > new.jpg
*Second step: place the file you want to hide in the picture > movie.wmv
*Now you have two files in that folder: new.jpg and movie.wmv
*Goto cmd
*Point to the folder
*Then: type COPY /B PICTURE.JPG + MOVIE.WMV NEW.JPG
*The new.jpg when double clicked will open the picture
*But when you will open new.jpg with media player the movie starts.
safe and easy