In MSN Messenger 7.5, the options window is composed of many option categories. In the “File Transfer” category the following option exists:
“Automatically share backgrounds and accept shared backgrounds”
I think this option shouldn’t be in the “File Transfer” category, as the user is not supposed to understand that sharing backgrounds requires a file transfer. If anything, it should be in the “Messages” category, where the smiley options (accept smileys or not) are.
Here’s a screen capture (click to see a slightly bigger version)
