Abstract: A method of or system for producing or executing a script for a load test of a terminal server. During execution of a high-level application by the terminal server controlled by a user of a terminal client in which the terminal client and terminal server communicate according to remote-desktop protocol, a terminal-services agent on the terminal server may monitor a change in at least one window of the high-level application within a terminal-client desktop of the terminal client. Window-related information corresponding to the monitored change from the terminal-services agent may be sent to an operation-test tool resident on the terminal client. The operation-test tool may log the received window-related information.