Probably the same way eBay does it. They have access to a database with all that information searchable by ISBN There are a number of sites that sell books that work the same. table with 2 columns and 6 rows Subj: [bksvol-discuss] Isbn Date: 1/23/2009 11:17:08 PM Eastern Standard Time From: p.wildcat1234@xxxxxxxxx Reply-to: bksvol-discuss@xxxxxxxxxxxxx To: bksvol-discuss@xxxxxxxxxxxxx Sent from the Internet (Details) table end Hi this is kenny. When I submitted a book and entered the isbn number It filled in the information fields for me. How does it do that? ************** A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100000075x1215855013x1201028747/aol?redir=http://www.freecreditr eport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=DecemailfooterNO62)