Quote Originally Posted by minni View Post
You'll need to become familiar with your admin's Tools->Developers Tool Kit. Use it to search for the string "sales message goes here" and it will display the file(s) in which that string is found ... so that you can edit them ..

I follow your post instructions but my string is not editble
It isn't editable from developer's tool kit. You need to download the file using FTP, edit it on your local system using a plain text editor, and then upload the edited version to the correct overrides folder.