Rendering Tier for WPF at 0 on Windows 7 with Nvidia 6800

I'm developing a WPF 3.5 app with 5 animations on the page.

I've added a messaebox at load to display the rendering tier of the machine.

On my Windows 7 32bit Professional machine with Nvidia 6800 and latest driver, it always displays tier 0, so software rendering is being used. On my older laptop with X600 ATI card and same OS, it displays tier 2.

Is there a way to change this, or anything I can check to make sure hardware rendering can be used?

Thanks
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wint100Asked:
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MereteCommented:
Windows 7 uses directx 11
I'm just going to offer this
Rendering Tier Definitions
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The features of the graphics hardware determine the rendering capability of a WPF application. The WPF system defines three rendering tiers:
•Rendering Tier 0 No graphics hardware acceleration. All graphics features use software acceleration. The DirectX version level is less than version 9.0.
•Rendering Tier 1 Some graphics features use graphics hardware acceleration. The DirectX version level is greater than or equal to version 9.0.
•Rendering Tier 2 Most graphics features use graphics hardware acceleration. The DirectX version level is greater than or equal to version 9.0.
http://msdn.microsoft.com/en-us/library/ms742196.aspx
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wint100Author Commented:
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