Thank you for your request. Cart runs optimally on Unix or Linux servers.
It requires CGI-BIN support. Most of the hostings offer CGI-BIN. However, cart runs also on OS X and WinNT servers. Some WinNT servers might not be fully compatible.
Shopping cart is written in PERL. It is a set of.cgi scripts. It uses flat-text database of its own. There are no advanced requirements for the database.
We offer free installation of the cart on your server.
Also, take a look at the installation manual:
http://www.paypalshoppingcart.org/paypalhelp/DCForumID7/4.html
Regards,
PPCal Shopping Cart support