If you change the authentication method in IIS to Digest instead of Integrated, it will allow you to specify what realm (domain) to authenticate to.  In theory I think this is what you are talking about, but I haven't tried it to see if it works as expected. (I just might have to do that to test it out.  This whole typing of the DOMAIN\username seems to be beyond a lot of my users...)

So, did you get this straighted out then?  I have one of my servers setup with almost a hundred portals now in Mixed-Mode, so I can give you some more detailed input on that if you need it.

[QUOTE]

Becareful with hiding the login controls. The Windows login is the only login control that will check the AD. When you've got Hide Login Controls checked you are hiding the Windows Login control so none of it's code is ever called.[/quote]

Mike, I've been thinking about this to make sure I understand how this works. This disables the AD the control on just the standard Login page? Links directly to the WindowsLogin.aspx page would still be fine? (I'd imagine this is the case, otherwise I wouldn't see the point of it.) If that's correct, this shouldn't  be a problem. All I'd need to do is set up a staff link, and make sure IIS is configured properly, and call it a sucessful fix.

Let me see if I can explain this a little clearer for you. 

There are three setting you have to look at in the Admin-Authentication menu:

DotNetNuke Authentication Settings
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 Enabled? <-- This enables/disables the "DNN" login, if you disable it you cannot log into an account that is not AD-integrated.

Active Directory Settings
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 Enabled? <-- This enables/disables the "AD" login, if you disable this you cannot log into an account that is AD-integrated.
 Hide Login Controls? <-- This shows/hides the button above the login prompt to all you to switch to the AD login.

If you are using "only" DNN-based accounts use these settings:

Enabled? Yes
Enabled? No
Hide Login Controls? N/A

If you are using "only" AD-based accounts use these settings:

Enabled? No
Enabled? Yes
Hide Login Controls? Yes

If you want "both" AD and DNN logins, use these settings:

Enabled? Yes
Enabled? Yes
Hide Login Controls? No

Note:
 - Enabling each provider adds another button above the login prompt (unless the hide login controls is enabled).
 - At least one of the providers HAS to be enabled.

Hope this helps...