Hello Wardell C.
You can check the DirectX status on your PC by running the dxdiag command from the Windows Start menu; since you're running Windows 7, you should find that your system has DirectX 11 installed.
You cannot "downgrade" the DirectX version installed along with your system, but you can go to the Microsoft
Download Center and download an older DirectX version for installing on your system.
Bye.
Luigi Bruno