PprunePop
There could be 101 reasons why your dvd won't play??? I guess from your post your running xp. For starters...What happens when you insert dvd? Is it region one or two? Believe it or not you can change the region in xp, but ONLY FIVE times! It's to do with international copyright (so they say) but I recon it's all to do with marketing $$$$ More info plz.
Rick