The program is intended for carrying out of various actions with versions DirectX. The program can change version DirectX for any another without restart of OS. For example, this program will allow starting many old games and if to establish package DirectX10 for XP, also many new games. And if suddenly OS after changes of version DirectX began to work stably always it is possible to return to DirectX 9.

if you have directx 10 installed on your pc, you can downgrade to dx9 without uninstalling dx10..

system requirements :
KMDXC runs on Windows XP or Later

Minimum hardware requirements

* Intel Pentium® or AMD K5 processor with 266 MHz
* 5 MB free hard disk space

* 32 MB RAM
* Video Card with support DirectX 7 or later


Software requirements
KMDXC has been tested on the following platforms:

* Windows XP Professional SP2, SP3
* Windows Vista Home Premium/Ultimate
* Windows 7 Milestone 1 build 6519

 

http://rapidshare.com/files/147062188/kmdxc.zip.html