I was looking around but with no success. I published an application hosted as a RemoteApp on Windows Server 2008 (not R2). I have managed to turn Vista theme on the server itself but when run hosted application on the XP SP3 machine theme doesn't appear and the application uses standard Win 2008 Server theme.
When RDC to the server (using standard mstsc command) theme is enabled.
Is there some way to enable this theme within the application published by RemoteApp?