mambo-phpShop has finally found a new CVS repository! You can checkout the module mambo-phpShop from cvs.sourceforge.net.
In order to obtain the source anonymously (read only) you need to know the following:

CVS Server : cvs.sourceforge.net
CVSROOT : /cvsroot/mambo-phpshop
Module : mambo-phpShop
User : anonymous (no password required)

Please know that the CVS server is case-sensitive. Fill in the details in your CVS Program (e.g. http://www.tortoisecvs.org for Windows) just as they are provided here.
You will have to "build" your own installer in case you want to install from package. Just add the files in the "mambo-phpShop root" and the directories classes, html, languages and shop_images into an archive.
The mambo-phpShop main module installer needs the files mod_phpshop.php, mod_phpshop.xml, phpshop_dtree.php and the folder modules/dtree packed into an archive.