ezgz is a free program by Chris Rorden: www.mricro.com
use at your own risk. Feel free to modify and distribute the
source, but please respect the distribution requests of the authors 
of the LibTar and DelphiZLib libraries:

LibTar from Stefan Heymann http://www.destructor.de/
gzio from Vincent Nikkelen http://gewis.win.tue.nl/info/delphizlib/

Note that Delphi must have the units in the gzio folder in its path 
in order to compile this project (go to the 'Library Tab' after selecting 'Environment Options' from the 'Tools' menu)

Requires Delphi 4 or later.

-chris rorden