title: Delphi component installation using .DCU file
body: <p>I am delphi developer and want to install component for Delphi 7 on Windows XP and 2007. I have .DCU files only.
  When I try to install .DCU from Component > insatll packege > Add> select .DCU file then it shows error like "Invalide Package file"</p>
  
  <p>Please help.
  Thanks in advance.</p>