Well, this is perhaps a very basic question, but I'll ask it anyway...
I have just downloaded DX 9 SDK(I couldn't find dx 8 SDK) as MSDN)...are there any major improvements from 8.0???
Also, when installing, the setup program asks me if I want to install the Retail or Debug version of DirectX. Which should I choose....???....I want speed, but good debugging information would also be great....