Not that you have lots of conversations with the machines as you administer Windows 2000 (or perhapsor maybe you do!) but you do open a lot of dialog boxes. The following table shows the keyboard shortcuts you can use to move through them:

Press To
CTRL+TAB Move forward through tabs.
CTRL+SHIFT+TAB Move backward through tabs.
TAB Move forward through options.
SHIFT+TAB Move backward through options.
ALT+Underlined letter Carry out the corresponding command or select the corresponding option.
SPACEBAR Select or clear the check box if the active option is a check box.
Arrow keys Select a button if the active option is a group of option buttons.
F1 Display Help.
F4 Display the items in the active list.
BACKSPACE Open a folder one level up if a folder is selected in the Save As or Open _dialog box.