Is there a way to provide limited access to IIS config, either via a tool shipped with IIS or another utility? In our case we need to give some users a read-only type of access, to be able to see IIS configuration but not modify it. It is Windows Server 2003, IIS 6. Thanks!
Read-only access to the configuration is not possible within IIS. At least it isn't with built-in functionality.
IIS was designed to only allow read/write access to Administrators.
Non-administrative users have do not have the permission to neither write nor read the configuration as configuration access would already provide a potential security breach / disclosure.
Still there is the chance that one of the various configuration-frontends or control panels for IIS support this functionality.
It's not in the most easily-readable form, but the on-disk IIS metabase is just an XML file from IIS 6 on. Any information you need can come from there.