1. A system for controlling use of content in accordance with usage rights associated with the content and determined in accordance with the environment of a user device, said system comprising: means for receiving a request for secure content from a user device, the user device including a standard application program having a rendering engine capable of being accessed to render content; means for verifying the integrity of the environment of the user device, including the integrity of the rendering engine of the standard application program; means for retrieving the appropriate usage rights based upon the results of the verification of integrity; and means for rendering the content on the user device in accordance with the appropriate usage rights, wherein said means for rendering renders at least a portion of the content with the rendering engine of the standard application program of the user device.