Yes you may need to buy some softw. Such as TMG??? I can't remember what it's called. But you'll see it mentioned many many times at the site trap_jaw4 gave you. That is a very good site. It has many sections & many forum sections also. It has all your answers if you're willing to put the efort & time into searching it. Another site of interest is
http://forum.dvd-guides.com/ & is a little similar but not as broad. It also depends whether you're using mac/windows. There's different apps for each. I use a mac but have been able to use either directly or convert all video files (except wmv) to burn to a dvd.