I Purchased the HD DVD to finf out that it would not work in my DVD Player. I could not return It because it was opened but not used. How are you supose to know it a thing works if you don't open it. So your return is not worth a dime! I ored the regular DVD and Found that all one needs is DVD one. The outher four DVD Has the same things as on the first DVD.I was very dissapointed in the series and wouldn't recomend it to any one.It is to much money for the little you get.