Media Player Error

I recently reloaded my pc, using an XP SP 2 cd (offical holo cd not my own slipstream.)  Downloaded all my drivers and got everything running but I am having a small issue with Media Player 11.

"Windows Media Player cannot play this DVD because there is a problem with digital copy protection between your DVD drive, decoder, and video card. Try installing an updated driver for your video card."

I checked all the basics and did install the codec pack XP codec pack 2.3.3. 

I believe that this is caused by a DRM issue. I beilve this because IF I load up Windows media player 11 to play a dvd with DVD 43 (this is a program for stripping off drm from dvds) the entire dvd plays fine, picture and sound are fine meaning it is not the disk or the drive.
This leads me to believe it is not in my pc's install or in a software setting.

XP SP 2 all updates from microsoft update
Media player 11 build 11.0.5721.5230
Office 2003 all updates
AtI Radeon 9800 Pro with latest drivers,
ATI TV wonder pro with latest drivers,
Ran the Direct X end user runtime updater


Can anyone offer any assistance???
 googleing issues no revelant results