We went to Ikea and I had them in my basket until I spoke with an employee who advised me that I needed some additional hardware to install. So I left them there..and it was hard. But then I did some online research and I think I read that you have to use these major BIG FAT screws that go in the wall and mess it all up. That scares me. Has anyone used them? Do you recommend them? What am I to do? My books are getting out of line in my office and something has got to give.