How do I rename a file to .htaccess in Windows 7?

Thanks to https://serverfault.com/questions/22626/rename-files-to-empty-filename-in-windows-vista I learned a new trick. Since this page shows up in Google higher for that error message, I thought I'd link it here too. Essentially if you want to do it in Explorer, name it with a trailing dot. The trailing dot tells Windows what the extension should be, and the initial dot and letters tell it what the filename (without extension) should be. It appears that a file without an extension is permissi…