What software should I use to convert rmvb files to dvd

It seems to me that people suggest ConvertXtoDVD but it doesn’t work and have many problems. Also, there are no solution to it. some said the older version such as 2.1.5 support the real media player files but still I can’t get it to work. Anyone else have this problem and would know what other sofeware will support this rmvb files? thanks for the help.