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OH, i thought i'd give an update on how Vista's Dx levels work
Fully Functioning versions of DirectX 9 and 10 co-exist in vista
Directx10 only supports Directx10
DirectX 9L (EX) is a specially designed version of DirectX 9 just for vista, to support DirectX 9 and older games.
Fixed Function DirectX 7 and Fixed Shader DirectX 8, are layered over Directx9 Dynamic shaders in Vista, so the minimum requirement for VBA becomes a Geforce FX or Radeon 9500
GDI is no longer hardware accelerated and instead written to system memory
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