The mod adds the "locked Forum" icon to the icon key at the bottom of the Board Index. This is a neat mod for those of us with MBCO2.

Upload locking.gif to your images directory, and apply the mod to Sources/BoardIndex.pl. This mod works with SP1 SP1.1 and SP1.2. Also included with the download is a screenshot of my forum, to use as an example.

To add the padlock icon next to the forum name to indicate that it is locked, just use some quick html in the edit boards option in the admin center. Insert this after the forum name:

<img src="http://www.mysite.com/YaBBImages/locking.gif" border="0">