Reporting Services Top Level Access Rights - SSRS

To get a list of the top-level folders and associated user permissions:


SELECT Catalog.Name, Catalog.Path, Users.UserName
FROM Catalog INNER JOIN
Policies ON Catalog.PolicyID = Policies.PolicyID INNER JOIN
PolicyUserRole ON PolicyUserRole.PolicyID = Policies.PolicyID INNER JOIN
Users ON PolicyUserRole.UserID = Users.UserID
WHERE (Catalog.ParentID =
(SELECT ItemID
FROM Catalog
WHERE (ParentID IS NULL)))
ORDER BY Catalog.Path, Users.UserName

this code was obtained from:
http://virtualgenius.spaces.live.com/?_c11_BlogPart_BlogPart=blogview&_c=BlogPart&partqs=cat%3DSSRS