Hi Mariano1979
I have a Shuttle XPC with an ATI 5670, Windows 7, PDVD 10mk2 ultra, Onkyo AV Amp and a C8000 Samsung TV.
Initially I had problems with the 3D, below is a small list of things that may help
1) You need PowerDVD 10 Mk 2 ULTRA edition
2) Run the PowerDVD 3D advisor, it will report of any potential problems, goto Cyberlink Site, from the menu Support then advisor
3) Get the latest version of PowerDVD software do not rely on auto update, goto Cyberlink Site, from the menu Support then Software Updates, PowerDVD
4) Leave the 3D setting on PowerDVD to Auto Detect
5) On the Samsung TV, menu, picture options, screen fit (will check this tomorrow)
6) Connect your HDMI cable directly to the TV (even if your amp is HDMI 1.4a)
7) Put your 3D disc into the drive, the full screen message will appear, click ok, at this point my Samsung switches to 1920 x 1080 @24Hz (from 60Hz)
Your Samsung will tell you it's going into 3D mode and to put your glasses on
Also I use HDMI for audio and Video and not DVI->HDMI, perhaps this could be an issue because audio cannot be transported across this connection (unless you are connecting into an Asus HDAV).
Which disc or discs are you trying to play ? I've used Bolt, Christmas Carol, Monsters v Aliens and Up!
From memory there are other things we can try with the setup, oh and I almost forgot, I use AnyDVD HD, it's invaluable!