The directions for installing and configuring extensions in DotNetNuke 5.0 are very similiar, but slightly different than from previous versions.
Login to your portal and navigate to Host >> Extensions and select the Install Extension Wizard
On the following Install New Package screen, you will be asked to navigate to the local path folder containing the ActiveDirectory provider pacakge. Then click Next.
On the Package Information screen, you'll be shown the basic package information. You can review the information and click Next
The next screen is the Release Notes Screen that will show you notes from the package author and let you know what changes have been made with the release. Review and click Next
Now, at the Review and Accept License screen, you should read and then tick the check mark to accept the license. Next
And finally, the Successful Installation screen. Now that you've installed the package, you'll need to configure it. Again, the process has changed slightly. Here's how to do it with DotNetNuke 5.0
Configure ActiveDirectory Provider for DotNetNuke 5
Navigate to Admin >> Extensions and click the edit pencil icon next the to the DNN_ActiveDirectory_Authentication_System package listing. This will take you to the ActiveDirectory settings page and from here it configures as in previous versions.
