XP for example does not include a DVD (video) player. Look up VLC PLAYER to fix that.

For DATA DVDs there are some dozen DVD recording softwares that use DVDRW media like a big floppy drive. All versions of Windows would have issues with that so think back and see if a name like Nero, Roxio, Adaptec, GEAR... HECK, read http://en.wikipedia.org/wiki/Category:Windows_CD/DVD_writing_software
Bob