I followed this article,

http://msdn2.microsoft.com/en-us/library/zhhddkxy.aspx

My command is:
aspnet_regiis -pe "connectionStrings" -app "/myWebSiteName" -site
711831 -prov "RsaProtectedConfigurationProvider"

The error message is: A configuration file cannot be created for the
requested configuration object.
Failed!

ASPNET user is under administrators group
my website is not a virtual directory under default website, that's
why I need to specify the site no.
OS is Windows 2003 server

Am I missing anything?

Thanks in advance
-rockdale