directx

rendering of fraphics is done by directx the traiangles and the polygons in the game is by the driver suppoirt by direct x

Provides libraries to help graphics programming... it will contain a list of commands that can be issued and the library will take the task of executing the commands...

For more info, check *en.wikipedia.org/wiki/Directx and/or *www.webopedia.com/TERM/D/DirectX.html

Arun

U must need DirectX 9.0c for playing latest games...DirectX is backbone of graphics

IT is somthing you need to play the lates games and bill charge your A** off for it..Bill gates that is...
HE will ask you for WGA check before download and then you will have to find some crack to overcome or cheat that...

DirectX is graphics Application programming interface, games, GUI Components, Shaders, VFX are made with it, by programming in it's API

U don't need to pay for it, unless u r a developer & making something commercial with it, U can download the DirectX API & SDK for free from Microsoft, it is the foundation of GUI in the upcoming Windows Vista, even in Windows XP, the GUI is GDI+ based on DirectX 7

for games, directX provides tools & API, much like cement for making a house, u can make graphics with it, game engines which are just rendering engines, anything, any kind of material etc which depends on the shader.

All the games require this common runtime, which can be downloaded for free, even from Non microsoft sources, like download.com or Digit CD/DVD