I can not play a DVD using media center as the primary DVD player.  The picture is distorted and flickers.  When I play a DVD with PowerDVD, it plays beautifully.  Any thoughts as to the solution?

 

XPS 600
Windows XP Media Center
Pentium D 830 3.0 GHz
2 GB 667MHz DDR2
Dual GeForce 7800 GTX SLI 256 Meg
250 gig Maxtor HD 7200
16X DVD+/-RW Dual Layer
16x DVD Rom Drive
Sound Blaster Audigy 2 ZS Platinum THX
Logitech Z5500 5.1 Digital Surround Sound Speakers System with Subwoofer
Dell 2001FP Digital Flat Panel
Logitech MX-1000 mouse
Ideazon ZBoard ZBD101 Gaming Keyboard