The latest version of PHP-Nuke can be downloaded at phpnuke.org
downloads page:
http://www.phpnuke.org/modules.php?name=Downloads&d_op=viewdownload&cid=1
You can also obtain older versions of PHP-Nuke, including version 1.0, from SourceForge:
http://sourceforge.net/project/showfiles.php?group_id=7511&package_id=7622
SourceForge is the world's largest home of open-source projects. Many projects use SourceForge's facilities to host and maintain their projects. You can find almost anything you want on SourceForge—whether it is in a usable state or has been updated recently is another matter.
Once you have downloaded PHP-Nuke, you should extract the contents of the PHP-Nuke ZIP archive to the root of your c:\
drive. You will have to create a folder called PHP-Nuke-7.8
in the root of your c:\
drive. (If you extract the files elsewhere, create the folder PHP-Nuke-7.8
and copy the contents of the main unzipped folder to this new folder).