you'd have to go and buy a dvd burner seperately and install it, u won't be able to do anything to ur current cd burner to make it burn dvds.
heres some dvd burners
http://www.newegg.com/store/SubCategory.aspx?SubCategory=5&Tpk=dvd burner
im not sure if the xps200 has sata or not, if u don't know i'd go with an ide drive just to be safe and it'll come with all the software u need to get it going.