You have to create own your username and password for RefWorks.
Ref Grab-it is the closest thing they have to referencing Web sites. That said, RefWorks was really designed for books because it checks WorldCat for citation information. As you know, there is little regularity to how a Website is titled and who is the author. This may be an instance in which you will have to enter your own citation information. To do this in RefWorks:
Go to References in the navigation bar, select Add New Reference. In "View Fields Used By", select your citation style. After Ref Type, scroll down to Web Page. This will change the required fields for you to fill out.