Here's another great Freeware Task Manager called SterJo. It can be used for advanced process or task management and simple Trojan or Spyware detection.
DTaskManager is a portable and free Task Manager created specifically to provide advanced features that the default task managing tool that ships with Microsoft Windows does not provide. Some example functions include the ability to suspend and reactivate a process much like Linux does, select multiple processes to terminate at a time, no need for confirmation windows.
Process Explorer is a system task manager that can be used to Kill Running Tasks or Kill Running Processes that normally refuse to be killed. Process Explorer can also be used to display which running programs have a particular file or directory open.