The look of the My Computer folder in Windows XP

In Windows XP when you open My Computer, it has the Local Disk and the CD/DVD drive in one row, all the user folders somewhere, everything is separated by lines, there should be someone who can figure out what I mean. But randomly mine has just turned into a weird mess, the folders can be moved around and placed anywhere like on the desktop, and it's mildly annoying, but enough that I feel like fixing it. Anyone know what I mean and how to restore the separation?