Many visitors ask me how I find new tweaks that I post on this site. One of the main tools I use is a free utility from Microsoft called Process Monitor. Process Monitor helps you by monitoring both registry and file activity generated by any process. You can see what files a process is opening and what registry keys it is reading values from. Using filters, you can even isolate registry and file writes. This can be very helpful when trying to identify a specific registry key to tweak and experiment with.
Download this free app directly from Microsoft by clicking here.