Windows XP had TweakUI to edit the Places Bar, but Vista and 7 don't have many dedicated tools to do the same, so a few oldies are needed for the task.
Toolbars included with many 3rd party applications either cleanly remove themselves from the system or make it intentionally difficult to get rid of all traces. Here's 3 tools that might be able to help remove toolbars and clean some of their leftovers.
The .NET Framework Setup Verification Utility is a very small and portable tool that you can use to verify the presence of files, directories, registry keys and values for the .NET Framework that is installed in your Windows computer
There are files and folders in Windows that even an administrator cannot access or modify. To do that you need to take ownership of the object and then give yourself full control of it. Here are 6 free tools that can do that in just a few mouse clicks.
Web Proxy Checker is a free and fast proxy checking software which checks SOCKS4/SOCKS5/HTTP/HTTPS proxies with and without authentication using multithreads.