in my setups i have done sign in to one realm for my main users, (corporate). and vendors i would give them a /vendor realm, i would also place a link for MAC users to go to /mac on the default sign in page under the disclosure, (remember the sign in page accepts HTML), this way the only users that needed to know a seperate link are vendors, all the rest go to the site and get what they need from there. just a thought. ... View more