How Do I burn an .IMG file using Nero?

I just downloaded a file that is named, bhp-movietitle-ntsc.img how do i burn that file onto a dvd so i can watch the movie!
Plus im not sure who it was that made the profile for Nero where i can download it and just double click it and all the setting would be set to burn certain types of file but that was the coolest thing ever!
Thanks for any help anyone can offer!

change the extension to .nrg and double click the file

Select burner then burn image and change fileformat to
show all files and select the img file. This works in most cases,