Hiding the URL/Address Bar

I have an odd problem that I would appreciate some help on.  At work I help out adding web pages that apply to my area of responsibility.  At times those pages are deemed to have such broad appeal that I am requested to place them on the menu of the corporate site so that the content of same is accessable by all of our field reps.  This is a good thing.

The corporate site has its own ASP login protection, and I am advised not to implement my similar coldfusion authentication because that extra step (to authenticate and save a cookie) is felt to be a hardship for the reps.  So now I have pages out on the site that are initially protected once launched.  However, any user having accessed those pages can now readily see the path and return to them directly, by-passing the network.  Worse - they can tell unauthorized parties of the direct link.  Well - you can see my problem.

Since I can not include CF authentication (nor incorporate an ASP routine in my coldfusion page) I am thinking the best rout to take is to simply not have the address bar appear when the rep links out to my main index page.  My only need is to hide the address bar on that main index page as it is a frameset.

Can anyone advise the best way to accomplish this?  Thanks!