>when I make a DVD in Windows Movie Maker from Windows Vista I can play the
>DVD in Windows Media Player 11. I cannot bring the DVD to Windows XP and play
>it in Windows Media Player 10. (I do not want to upgrade to WMM 11 because I
>will not be able to use Active Sync to sync with my PDA.) I can however take
>the DVD and play it on a stand alone DVD player.
I'm assuming you're not seeing video *or* hearing audio either.
You've probably not installed a DVD decoder package yet.
Deccheck can test if you've a compatibel DVD decoder installed :
http://www.microsoft.com/downloads/details.aspx?FamilyId=DE1491AC-0AB6-4990-943D
-627E6ADE9FCB
Otherwise you'll have to purchase one - NVidia and Elecard offer trial
decoder versions for you to ensure their compatibility with WMP10 :
http://elecard.com/products/products-pc/codec-pack/mpeg2-decoder-plugin/
http://www.nvidia.com/object/dvd_decoder_1.02-223-trial.html
HTH
Cheers - Neil
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Digital Media MVP : 2004-2008
http://mvp.support.microsoft.com/mvpfaqs