You can also visit http://errorcode401.blogspot.in/2013/06/hide-file-inside-image-needed-things-1.html to hide your file inside the image.
Step 1: Create Message File
Type your message which you want to hide in image and save it on deaktop.
Here i am saving my message in msg.txt file.
Step 2: Select Image
Copy that Image File on desktop. [Here i am copying 401.jpg image]
Step 3: Hide Message in image
Now type cd desktop then hit Enter.
Then Type copy /b 401.jpg + msg.txt hiddenmsg.jpg then Enter.
[Note : Here hiddenmsg.jpg is new image file which contain your message.
401.jpg is your image and msg.txt is text file
you have to change this file name in command as per your file name]
Step 4: Done
Now you can see one new image file on your desktop name with hiddenmsg,jpg
Step 5: How you can see your Message
Go to End of that file. you will see your message there.
You can also visit our blog for more.
Facebook Page : http://www.facebook.com/errorcode401
Twitter : http://www.twitter.com/errorcode401