Did you run setup 'As Admin' ?

>I was stalling sql server and in the window "components to install" Reporting Services was ready to install, i contibued to the installation and this window message appeared after some minutes of installing:
>
>"SQL Server Setup failed to modify sevurity permission on file :C:\Archivos de programa\Microsoft SQL Server\MSSQL.2\Reporting Services\ReportServer\reportserver.config for user Administrator. To proceed. VErify that the account and the domain running SQL Server Setup exist, that the account runnning SQL SErver SEtup has administrator privileges,and that exist on destination drive"
>
> i verified all the things that said the message but the error still appears. then I choose abort button and the installation continued and in the last part it appears tha it was not installed resporting services and whos a log file SQLSetup0004_PC1_RS.log thta in the last part said the following:
>
>Property(S): Bin.C994FDB4_C68E_44B5_999F_35893B90EDA7 = C:\Archivos de programa\Microsoft SQL Server\MSSQL.2\Reporting Services\ReportManager\Bin\
>Property(S): BinES.C994FDB4_C68E_44B5_999F_35893B90EDA7 = C:\Archivos de programa\Microsoft SQL Server\MSSQL.2\Reporting Services\ReportManager\Bin\es\
>MSI (s) (78:4C) [17:00:52:562]: Note: 1: 1708
>MSI (s) (78:4C) [17:00:52:562]: Product: Microsoft SQL Server 2005 Reporting Services -- Installation failed.
>
>MSI (s) (78:4C) [17:00:52:625]: Cleaning up uninstalled install packages, if any exist
>MSI (s) (78:4C) [17:00:52:625]: MainEngineThread is returning 1603
>MSI (s) (78:AC) [17:00:52:734]: Destroying RemoteAPI object.
>MSI (s) (78:38) [17:00:52:734]: Custom Action Manager thread ending.
>=== Logging stopped: 16/04/2010 17:00:52 ===
>MSI (c) (60:D4) [17:00:52:968]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
>MSI (c) (60:D4) [17:00:52:968]: MainEngineThread is returning 1603
>=== Verbose logging stopped: 16/04/2010 17:00:52 ===
>
>
>Can anybody help me, what happened , and how can i solve this ?
>Thank you
>Luis