Thanks for the reply Bob. I see where your coming from but I don't think this is what I'm looking for. Let me try from another angle.

The way I see it, I can use either Forms based authentication for the internet users and try to figure out if the user is already authenticated to the local domain(LAN User), or use Windows authentication and try to get my other non domain authenticated user (internet users not in the domain) on the site. Does that make since, or am I trying to go about this the wrong way?

TIA

>Just of the top of my head:
>
>1. Turn inpersonation on.
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>2. Try a connection string with trusted security. If this fails to connect, redirect to a login form.
>
>3. Build a connection string with the users login name and password and send them to sql (I assume that is what you mean.)
>
>BOb
>
>
>>I need to authenticate against existing user accounts within Windows (e.g., a local account on the web server, or a domain account in the active directory, etc.).
>>The catch is:
>>
>>1. I need mixed-model authentication.
>>Some logins will be part of the company infrastructure, and some won't (because the people will be external to the company). I don't want to add the admin burden of getting those external people into the active directory. Therefore, those users should have an internal username and password preferably on a SQL backend.
>>
>>2. I want a single login page.
>>I would like to use a single form to log everybody in, when needed.
>>
>>3. I would like seamless login for domain users
>>It would be nice if I could get seamless login for domain users, and have them not even have to fill out the login form.
>>
>>I've searched around and haven't found a sample that addresses all of this. Is this wishful thinking or can this be done?
>>TIA