i have been busy with this "Google mini" for almost 3 weeks in total, from installing, customizing and integration.
The results are:

For explaination what is google mini:

Google Mini Search Appliance

The
Google Mini offers the simplicity and power of Google's universal
search technology at a great price. An integrated hardware and software
solution, the Mini offers true plug-and-play installation and can be
purchased online. Whether you're looking to search your company's
internal information or your public website, the Mini has the features
for your business.

Link