Add subtitle to DVD?

Hi

I wonder if there is a way i can add subtitles to a dvd, wich dont have any subtitles to begin with? i have a srt file for the subtitles, but i dont know how to add it to the movie, is this possible at all?

thanks in advance

http://club.cdfreaks.com/showthread.php?t=135193&highlight=subtitles+dvd