image widget

‘the image widget’ is not part of the wordpress standard installation; it is probably a plugin http://ww.wp.xz.cn/extend/plugins/

if your theme has dynamic sidebar(s), it is probably done by finding, downloading/upoading and activating the ‘image widget’ plugin.

it should then be available with the other widgets to drag into the widget areas in ‘admin’ ‘appearance’ ‘widgets’