Most user interactyions with Web pages involve navigating hypertext links between documents. The main interface problem in websites is the lack of sense of where you are within the local organisation of information.
Clear, consistant icons, graphic identity schemes and graphic or text based information and summary screens can give the user confidence that they can find what they are looking for without wasting their time.
The user should always be able to return easily to your home page and to other major navigation points in the site. These basic links should be present and in consistenet locations on every page. Graphic buttons will provide basic navigation links and create a graphic identity that tells users they are within the site domain.