Help!! "The report server has encountered a configuration error........"

Hi There,

I have installed Sql Server 2005 on my machine. I've managed to created report, but when i try to deploy e same, I'm getting e following error...am i missing something here?

• The report server has encountered a configuration error. See the report server log files for more information. (rsServerConfigurationError)
  • Access to the path 'C:\Program Files\Microsoft SQL Server\MSSQL.4\Reporting Services\ReportServer\RSReportServer.config' is denied.

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when i checked in msdn..there it says
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/RSerrors/htm/Microsoft.ReportingServices.Diagnostics.Utilities.ErrorStrings.resources.Strings_rsServerConfigurationError.asp

Other info:

I have followed the Tutorial Project in SQL Books online. And for TargetURL, i have given --> http://localhost/reportserver

Report server is located in my local only

rsreportserver.config : I dint touch this file and mine is fresh installation.

Help please :)