  1. Extract files from arhive
  2. Run Delphi. 
  2. File/Open ... FIBPlus?.dpk. Click Install.
  3. File/Open ... FIBPlusEditors?.dpk Click Install.

Dpk Files:
  for Delphi3 :   FIBPlus3.dpk FIBPlusEditors3.dpk
  for Delphi4 :   FIBPlus4.dpk FIBPlusEditors4.dpk
  for Delphi5 :   FIBPlus5.dpk FIBPlusEditors4.dpk
  for CBuilder5 : FIBPlus_CB5.bpk ...
