Generic Script resource to interact with desktop

I have a non cluster aware app running using the generic application
resource. The app has a GUI that requires user interaction to shut it down.
The problem here is that the generic application resource allows only a basic
process kill to take a resource offline. So I intend to use the generic
script resource which provides access through vbs to gracefully shut a GUI
down. The difference here is that "Allow application to interact with
desktop" and "Use Network Name for computer name" do not exist for a generic
script resource. I intend to use the environment varaible
"_CLUSTER_NETWORK_NAME_" to get the round the second one and use Psexec to
call to the desktop seesion directly to interact with the desktop. Anyone
tried this configuration before?
--
Ian