I have installed Microsoft's Application Compatibility Toolkit (ACT) in order to bypass UAC for Standard Remote Desktop Users who need to run an app on our Server 2008 R2.
I setup a new database, saved it and installed it, which did the job straight away. I have since had to restart the server and the users are now unable to run the application, due to restrictions that require administrator elevation.
I am under the impression that ACT writes a registry value that the app references every time it starts. It then 'runs' the app with elevated permissions as defined in the ACT database.