Yeah, actually that is not the same thing as Smarteye and I were thinking now that I look at it closer.. Windows highlights things that are selected, in this case, the icons on your desktop.. Just select something else, or click on the empty space on your desktop, and the box you are referring to should go away...
I was more referring to the annoying scaling issue, that can occur when you have icons that are smaller than standard. I like to increase the size of my desktop icons slightly, and if the icons are smaller, eventually, they will no longer grow, and a little grey dotted box will be around them.. Itunes for instance, is notorious for this.. My method describes a place to score many free icons, and also a way to replace the icons on the desktop with large, resize-able icons..