Credits:

• François Piette: maker of ICS (a set of free internet components for delphi and BCB) for his experience. Also he doesn't quite knows it, he helped me quite a lot understanding the various internet protocols.
• Kyle Miller: Who, through a rather hot newsgroup exchange, pointed to me for the solution on how to work with IIS 5 the same way as with IIS 4.
• The various people that asked questions about those pages, forcing me to clarify some points and on several occasions, corrected me where I was wrong.