The Wayback Machine - https://web.archive.org/all/20060615204242/http://www.oscommerce.com:80/solutions/documentation
Documentation
Until the next project version is released, documentation is provided separately and is generated automatically on a daily basis from the content of the Knowledge Base site. The Knowledge Base site is made for the current development version of the project and may contain sections that no longer apply to the current milestone release that is available for download.
osCommerce Documentation
Windows Package (zip)
» Download at SunSite (Europe)
The content within the Knowledge Base site is a work in progress, and will be presented in online (HTML) and offline (PDF) formats when the next stable release of osCommerce is finalized and released.
Knowledge Base
Documentation Community Support Forum
Online HTML Based Documentation