You can import the icon pack by clicking on the "Wrench" icon on your Touch Portal desktop application and select "Import icon pack...".
When you have imported it you can select the icon pack from the icon pack screen. This screen will be shown when you add an image to your button while you choose the option "From icon pack". More info: Importing an icon pack
If the automatic download does not start in 5 seconds, use this link to download the file: Download