IIS7, Visual Studio 2008 and Vista - debugging websites

I seem to be having a frustrating setup day today...

Seem to be hitting an endless churn of things to configure before I can actually get on with some work!

The latest problem was an error message from VS2008 which said:
To access local IIS websites, you must install the following IIS components:

IIS6 Metabase and IIS6 Configuration Compatibility
Windows Authentication

...

This was actually a remarkably accurate error message - it just took a while for me to work that out and to work out where to turn them on. This post on iis.net helped - thanks:

Follow these instructions to make these configuration changes:

1. Windows Features
2. In Windows Vista, open Control Panel and then click Programs and Features.
3. In the right pane, click Turn Windows features on or off. The Windows Features dialog box opens.
4. Select the Internet Information Services check box.
   NOTE: Certain necessary related features will automatically be selected when others are selected
5. Double-click (or expand) Web Management Tools, double-click IIS 6 Management Compatibility, and then select the IIS 6 Metabase and IIS 6 Configuration Compatibility check box.
6. Double-click (or expand) World Wide Web Services, double-click Application Development Features, and then select the ASP.NET check box.
7. Double-click (or expand) Security, and then select the Windows Authentication check box. (this step may not be necessary depending on your security needs).
8. vii. Click OK