Engineering Firms These firms can help you with the more technical aspects of your site, whether you need a database-driven site, advanced CGI scripting, or customized e-commerce architecture.   Leverage Located in San Francisco, Leverage specializes in creating systems for companies who use the Internet in their industry. marketing@leverage.com   Vertebrae Vertebrae's technological approach focuses on strategic planning and problem solving, as well as cost-effective solutions.  sales@vertebrae.com   Webworks Clients include banks, brokerage houses, employment firms, phone companies, and advertising agencies.