The Direct3D is still experimental?

[Reptillian]

I'm just surprised. That's all. I understand that it should take time though, but I decided to say this.
Side note-Still awaiting for the day that I can run old 3D games just fine in a virtual machine. Not all of them do at this state and these days it's just getting tougher to run old games. To be specific, they're from 1997 and 1999 which supports DX5 or higher.

[Perryg]

You answered your own question. That's one of reason why they are still experimental.

[Technologov]

Reptillian:
3D is still experimental.

But (!) Some games and apps have patches that allow it to run on modern Windows OSes:
-Age of Empires 1
-Need For Speed 5 (Porsche)
-3D Mark 99 MAX
-Starcraft 1 (original SC worked only on Win95/98)

The common idea - is that the game must be popular to get such patches (sometimes unofficial, by hackers, sometimes official by company). Rare games still require Windows 9x (Dracula), ...
You need to Google for your game to find such patches. I was able to patch 50% of the games I need.

[squall leonhart]

DirectX7 and lower rely on DDraw.dll, which replacing results in a never ending error loop as OpenGL.dll relies on Ddraw.dll