I don't know why because I'm not getting the error message when I try the site. I can access all of it.

When I do as it suggests there is no Directory Security tab as shown below. Anybody ?

RESOLUTION
To resolve this problem, do the following:

Open the properties of the Default Web Site and choose Directory Security.
Click the Edit button for Authentication.
Click the Edit button for Anonymous and edit the account listed to read "Domain-name\Anonymous."
Disable Password Synchronization.
Manually shut down the MMC to ensure proper writing to the metabase.
Go to a command prompt and issue "net stop iisadmin /y."
At the command prompt, issue "net start w3svc."
Restart the computer.

XP Home-768MB-60GB-AMD 2400+-IE6-BT Broadband-500ml Stella.