Common Gateway Interface (CGI) is a method for creating dynamic Web pages, that is, the Web page changes without the author physically changing it - the dynamic page is created on the server. The CGI script or programme generates a list of HTML commands which make a Web page. This guide shares professional scripts developed by eXtropia and CGI applications for the Web written in Perl. The text assists in customizing each programme to suit the user's needs. The CD ROM contains applications for common Web tasks including a mailing list managers, guestbook, Web-based data management, event calendar and email.