You're running only a few applications, but your PC's performance is lagging. Windows 2000 offers an easy way to find the culprit. Press --, and click the Task Manager button. You'll see a list of running programs under the Applications tab - but you'll find out more about your system resources by clicking the Processes tab. This lists all the system processes and applications, along with the memory and CPU usage for each. If you find one application hogging memory or CPU time, close it to free up others. Don't rush into this one-click decision: you could crash or lose unsaved data. Instead, press - to switch to it, then save data and exit the program in the normal way. Some programs may be minimised as icons in the system tray.