Since DXCPL is a standalone executable ( dxcpl.exe ), you don't typically "install" it in the traditional sense. You simply need to acquire the file and run it as an administrator.
If you meant a different dxcpl (like a custom tool for a specific game or mod), let me know and I can clarify further. download dxcpl
Frequently used to resolve compatibility issues with older Pro Evolution Soccer titles. Since DXCPL is a standalone executable ( dxcpl
DXCpl is part of the DirectX SDK (June 2010) . download dxcpl