The Windows registry is a mysterious place , but if you're comfortable editing it, you have the power to tweak nearly every Windows setting you can imagine. Here are 10 of our favorite registry tweaks that make life easier. All of these hacks work in Windows 7, even if not labeled as such. Many may work in Vista or earlier versions of Windows, but varies, so be sure to read up more on the tweak before you go meddling in Vista's registry. And, of course, be sure to make a backup of your registry before you start hacking away. 10. Hide Pre-Populated Items in Windows Explorer's Sidebar Windows Explorer is pretty easy to navigate, but that sidebar can easily get cluttered with features you don't use. For example, if you're the only computer on your network, you probably have no need for the Homegroup or Network trees. Each item in the Explorer sidebar has a registry key, and with just a few minor tweaks , you can have them hidden in no time. 9. D...