More and more people are making significant cash doing this. It should carry exciting and enjoyable features to draw in your captive audience, who can then be encouraged to register for your information areas.
These are protected by a password which you only give out when your customer has completed the relevant forms.
You could write the site yourself, or get writers to contribute articles. Remember you can make more cash by featuring adverts too.
Publicise your site via other Web pages and links from those pages, and mailshot organisations who may be interested in your service.