Reports Services will not work with SharePoint 2003 and SQL Server 2005

We have installed SharePoint Portal Server 2003 (it is working correctly) and SQL Server 2005 (it is working correctly) on a single virtual machine.

If I enter "http://ComputerName/reports" to display the Report Manager we get the following error:

(yes, I did put in our computer name in the appropriate location)

Parser Error Message: An error occured loading a configuration file: Access to the path 'c:\inetpub\www\root\web.config' is denied.

Is this a permissions issue, a configuration issue, or something else?

Any suggestions for resolving this would be appreciated.

We have found the cause for this. It was a corrupted installation.