i have win 8 .. and i also have the original rCt.. i was able to run it via the compatibility but the problem is that when i run it i see everything is black and i can just hear the sound of the game ... i know the game is running but i need to know how to make my pc graphics bad so that i can properly run the game ?? plz help

What's your GPU? AMD or Nvidia?

Try installing the DirectX 9 Runtime, as Windows 8 is missing some of the older components by default.
Here's the link: http://www.microsoft.com/en-us/download/details.aspx?id=8109

i have intel gpu the 4600 series