Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.
Here are some key features of "Widgetize Google Gadgets":
· Add multiple Google Gadgets.
· Place the Google Gadgets anywhere in your sidebar.
· Title is optional. Leaving it blank will make not show it in the theme.
· Width of sidebar is used and height is used from the Gadget configuration.
· WordPress 2.0 or higher