Activate it in the administration area of your wordpress blog.
Put it in a widget ready theme in the administration area of your wordpress blog.
Make sure to fill in the widget title and the thumbnail width an height there too, else it will not show a title and it will show the images in original size.
If you don't have a widget ready theme, you can use <?php postimg_widget($args) ?> in your theme file. I'm working on detecting if the widget is in a widget-ready theme and add some styles to the non-widget theme then.
To Do: Add support for all the mayor javascript frameworks (i.e. prototype, mootools).
Requires: unknown or higher Compatible up to: 2.8.6 Last Updated: 2010-2-19 Downloads: 4,287