http://www.activexperts.com/support/network-monitor/online/ii6metabase/
http://blog.geoffreyemery.com/post/iis-6-metabase-and-iis-6-configuration-compatibility-error.aspx
How to install the IIS 6 Metabase Compatibility components on IIS 7
The ActiveXperts Network Monitor Web Configurator requires that the Windows Server 2008-based or Windows Vista-based computer where you are configuring a Virtual Directory has the IIS 6 Metabase Compatibility components installed.
To install the IIS 6.0 Management Compatibility Components by using the Windows Server 2008 Server Manager
- Click Start, click Administrative Tools and then Server Manager.
- In the left navigation pane, expand Roles, and then right-click Web Server (IIS) and select Add Role Services.
- On the Select Role Services pane, scroll down to IIS 6 Management Compatibility.
- Select the check boxes for IIS 6 Metabase Compatibility and IIS 6 Management Console.
- Click Next from the Select Role Services pane, and then click Install at the Confirm Installations Selections pane.
- Click Close to leave the Add Role Services wizard.
To install the IIS 6.0 Management Compatibility Components by using the Windows Vista Control Panel
- Click Start, click Control Panel, click Programs and Features, and then click Turn Windows features on or off.
- Open Internet Information Services.
- Open Web Management Tools.
- Open IIS 6.0 Management Compatibility.
- Select the check boxes for IIS 6 Metabase and IIS 6 configuration compatibility and IIS 6 Management Console.
- Click OK.