Originally Posted by CWatkinsNash
It's in the "system" folder, which is hidden by default. In Windows, you can either change your folder preferences in Explorer to show hidden folders ("Organize" button in Vista>Folder and Search Options>View tab), or you can open the Kindle "drive" in Explorer, go up to the address bar, and simply add system\. For example, my Kindle is f:\. In Vista (and I guess Win7) it looks like you can't type in there but you can - just click in empty space in the Explorer address bar and it will change from "buttons" to a field you can type in. Screenshots attached.