Xceed Zip Compression Library Documentation
Installation instructions for Delphi 4 to 7
Installing > Installation instructions for Delphi 4 to 7

The Xceed Component Installer will copy all the necessary files into the library's installation folder (usually in \Program Files\Xceed Components\Bin\ActiveX) and register the XCEEDZIP.DLL ActiveX / COM component. The only thing left to do is to make the control available in your Delphi  environment by inserting the control into the toolbar. To do this, perform the following steps:

You have now successfully installed the Xceed Zip Compression Library v6.x ActiveX control in Delphi. The components should appear in your component toolbar (ActiveX tab). 

The License method must be called to license the library for runtime use. This applies to both registered users as well as users of a time-limited free trial license.