File Icons Plugin

File Icons adds icons via CSS to your links.
Configure and displays icons before links on your WordPress website by css (on firefox, opera, etc.)
Icons come from the famous free icons set at famfamfam.
Localized: english and deutsch(german)

1. Download, unzip and upload to your WordPress plugins directory
2. Activate the plugin within you WordPress Administration Backend
3. Go to your WordPress Administration Backend > Presentation > File Icons for configuration options.

1. 

   iconize css patterns

2. 

   Configure your icons

3. 

   Set css classes and/or ids on which to apply the icons

I have messed up my configuration

Deactivate and reactivate the plugin again.