I can give you a two step approach.
1] Convert your tapes to mp3; http://www.tech-faq.com/convert-audio-tape-to-mp3.shtml , then
2] Burn to CD as audio (cda); http://www.mymusictools.com/articles/how-do-i-convert-mp3-to-cda.htm
You specifically mentioned DVD. I assume you want to play the music on a stand-alone player like a CD Player. I don't know if such players also accept DVD format.
I have windows XP. I am in beginners mode and am trying to convert my cassettes to DVD (music). Any help would be appreciated.hobocolo