changing file name to burn to dvd

Hello could any one help me to find a software to change file name or type not sure on the term you call em, have tried a few but yet still no luckevery time I try to burn to dvd it keeps telling me wrong file name.
The film that I am trying to change and I downloaded it from Suprnova a Bit Torrent is Godsend RMVB .. if poss could some one help me out ..thx