Copy the oscommerce directory to your web server htdocs directory and open the location with >your browser. Setup will automatically launch and guide you through the installation and configuration of your new online store.
I copied the said folder into htdocs, in my browser I go to localhost which displays the index.html in the htdocs folder already (just says "it works!"). I do not see the setup launch?
I installed PHP 5, but not sure if I done it right, I just used the MSI installer.