There are lots of DVD converters/creators on the market and the one you choose will depend on cost constraints, your needs for "extras" in the program options, and the type of files you're converting.. It's your choice as to which one to use. Just one example of a free converter is in the link below: (It's slow and doesn't have any "extras" but it does convert and burn most file types to DVD format)

There are other such programs with a lot of neat options but you'll want to do a little searching.

Hope this helps.