lowerider883..... You will have to recode ( change the format ) to achieve what you want ....... The app listed below will do that for you , however there are many others that will do the same thing .
http://www.*SPAM URL*.biz/super-dvd-creator.htm
Depending on the size of your video file you could burn it as a video cd as opposed to a DVD .
If you have Nero Express software .......it will encode the file for you as well . It does take quite a while to recode ....so be patient .........
Use your google and enter convert WMV to DVD and see all possibilities.
Hope this helps
dl65