Hiding a message in an image

Hello everybody; our Matlab project for this semester consists on hiding a message created in MS Paint (a .bmp file) in an other image (also a .bmp file). This needs to be created along with a Graphic User Interface (GUI) which helps people who have no experience with Matlab to use this technique. I have no clue on how to do this! I will send the detailed .pdf file of the project to those willing to help me. Thank you in advance.

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/?term=tag%3A%22steganography%22

Answer 1

[Image Analyst]

See one way of doing it (LSB watermarking) where I gave code here: http://www.mathworks.com/matlabcentral/answers/36890-image-scrambling-code-in-matlab