Improving Application Performance by DISABLING hardware acceleration?

My understanding, is there are two paths to the graphics hardware. One is
Legacy GDI and the other is DirectX:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/programmingguide/gettingstarted/architecture.asp

It seems that disabling graphics hardware acceleration can dramatically
improve performance of GDI applications and system resource usage on Windows
2000/XP.

Anyone know of a programmatic way to disable hardware acceleration?


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