Delegent is an authorization server developed to provide a single centralized policy repository for multiple applications with support for decentralized administration by means of delegation. We investigate how to integrate Delegent with the Rotor implementation of the .NET framework and compare the features of Delegent with those of the existing application level authorization models of .NET. We conclude that Delegent offers help for application developers and a decentralized administration model, that are not available in standard .NET, and that the .NET model is well suited to be extended to use an authorization server.