Even with the specialised “files” sticking out of them, the folder icons on a Windows Vista desktop can be pretty hard to tell apart, and there’s no built-in OS X-like colouring application to aid quick location. The Dumb Little Man blog posts a dead-simple guide to overcoming look-alikes with custom icons. It’s fairly similar to how you do the same in Windows XP, but worth revisiting for a more navigable desktop.