An OS Commerce ecommerce website can be designed using the STS system which allows the design in one HTML file. It is simpler compared to designing with a standard OS Commerce module.
Using Fantastico which is available with Cpanel hosting , the process of installation of OSCommerce on your website is simplified to a create extent. The databases are created automatically.
Most web hosting companies include a free shopping cart software for Ecommerce . For some web hosts there is a script which installs the software on the website. The shopping cart software allows the visitor to select a particular item and add it to the list of products he wishes to purchase.
The web designer can create a standard web page and integrate the shopping cart by adding the relevant code to the web page, so that the check out and payment pages look similar to the rest of the website.