Notes : How to use "downloads" for oscommerce

Download

You need to enable this if you are going to allow people to download products at
checkout from your store.

First, put the product to be downloaded in the download folder on the Internet:
catalog/download

It will be read from the "pub" folder.

Make sure /catalog/pub is 777 and /catalog/download is 755 and these files in
catalog/includes/configure.php have the forward slash:
define('DIR_FS_DOWNLOAD', DIR_FS_CATALOG . 'download/');
define('DIR_FS_DOWNLOAD_PUBLIC', DIR_FS_CATALOG . 'pub/');

Under configuration in the admin set up the download info, true, true, expiry date, max
number of downloads.

Add the product in the admin under "catalog", "categories/products.

After you have added the product go to "Product Attributes" under the "Catalog" heading
in admin.

Choose the product in the bottom "Product Attributes" box.

When you choose a product and have download enabled in the configuration section you
will see a box below the "Product Attributes" section where you can add the product as a
download.