If those self are attached to the wall they should be attached with just screws in the tracts along wall at the bottom and top of each track. Look close on the piece next to the wall way better than cutting it out. As for hanging your lite go to the hardware store and get a hook on one end and a pointed screw on the other end and scew into stud on top of closet. Take a hammer and lightly tap the sheet rock if there is any and go along top closet untell you hear solid noise and that your stud. If you can't find a stud or in the wrong place they also have other type of hooks at hardware store that are made for hollow walls, they only cost a buck apiece. Also if all else fails on your shelf get a hack saw and cut shelf out. But I bet it just attached with screws you just have to find them. Good luck on your new project Bizzy