Yeah, I thought that was the easy part too, but alas I was wrong. :-)
Unfortunately I already tried that a number of times and it just won't show up. I can do it with any other .dll/control I've got, but the one particular one I need just does not appear. I've even tried it on different computers and different versions of the control, including their newer demo, but alas it just does not appear anywhere in the toolbox, even if I create an entirely new tab for just it. I can even get their report control in there, but not the viewer.