You can use the common Windows keyboard shortcuts in the Administrator (e.g., CTRL+C to copy, CTRL+V to paste, ALT+underlined letter in menu to open the menu). Microsoft Knowledge Base article #126449, http://support.microsoft.com/kb/126449, describes each of the keyboard shortcuts that are available in Windows.
As in any Windows-compatible application, a button or menu text with an underlined letter has a shortcut key associated with that letter.
In addition to the standard Windows keyboard shortcuts, there are several keyboard shortcuts available in the Administrator. Refer to Main Menu and Toolbar for a table of shortcuts.