Now you can add your own emoticon to your messenger in ten easy steps. Please make sure that you have the latest updated version of MSN messenger. If you don’t have it you can download it at msn.com To add your own custom emoticon to messenger. 1. Right click on the emoticon you like to add. 2. Select "Save picture as” 3. Save the image in the directory you prefer (Perhaps create a folder in your documents named smiles) 4. Open MSN Messenger 5. Click on 'Tools' at the top .