On the i600 default front page of PIE, there is a quick search input field for user to quick search their query.

It was set to use Microsoft Live search engine, which of coz, I prefer Google as my search engine more.

So if you want to search like what I prefer, here is the Registry key you need:
HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMainSearch Page

The default setting for using Microsoft Live is:

For using Google:

You can even add more query options to it for Google search, if you want to know more please search for Google hacks.