How to use System Explorer as Task Manager Replacement
You can enable Task Manger replacement in menu "Options>Replace Task Manager".
This option is not available for 64bit operating systems and Windows7. BUT....You can still use System Explorer as Task Manager Replacement. Just use "CTRL+ALT+INS" hotkey instead of "CTRL+ALT+DEL".
You can view this article online at:
http://systemexplorer.net/knowledgebase/index.php/article/how-to-use-system-explorer-task-manager-replacement