You can use Zip-uploader feature if your version of WordPress has it
Download the Plugin as Zip file, but DON'T extract the Zip File
In your Admin, Go to Plugins/ Add New / and then click Upload from the choices .. browse for the Zip that you downloaded
OR do it the manual way:
Download and extract the Plugin zip file.
Upload the folder containing the Plugin files to your WordPress Plugins folder (usually ../wp-content/plugins/ folder).
Activate the Plugin via the 'Plugins' menu in WordPress.
Once activated you go to the Plugin options by clicking the 'Attention Div Boxes' link under the 'Settings' menu.
If you're brand new to this plugin, all 10 of the DIV settings will be blank waiting for your amazing CSS creativity, or you could click a button of the page, and it will pre-fill your settings with some samples that I created.
Requires: 2.7 or higher Compatible up to: 3.3.2 Last Updated: 2012-6-26 Downloads: 3,251