Hide files inside a image

You can hide all sorts of files inside a bitmap image using a nifty little software called HIDE IN PICTURE which can be downloaded free from http://hide-in-picture.sf.net/

According to Davi Tassinari de Figueiredo (creator of HIP),
"Hide In Picture (HIP) is a steganography program. It is a program that allows you to "hide" any kind of file inside standard bitmap pictures. The pictures look like normal images, so people will not suspect they contain hidden data.

You can use a password to hide your files, and only those who know the password use are able to retrieve them - without it, people cannot even be sure there is something hidden in the image."
HIP hides data inside a picture by modifying its colors in a way that is almost unnoticeable by the human eye. When a file is hidden, it conceals each part in an area of the picture; the areas used to store each part of the file are chosen by doing several calculations with the password given. When retrieving a file, the same calculations are done to the password and, knowing which area contains each part of the file, it can be reconstructed. If the wrong password is used when retrieving a file, HIP will try to read the file from the wrong areas and will not find anything there.
For more information about HIP read their Documentation.
Happy Hiding !!!