I think I know what your talking about. Do you mean that in your address bar you see website addresses in it or they appear after you start typing a portion of it?, example:
If you type "www.Dn" in your browser, "www.dnforum.com" appears.
If this is what you mean, try following this;
In IE, go to Tools û Internet Options... û Content tab û AutoComplete... button, and take it from there.
RMF