In SharePoint 2010 there is a nice little feature in a search site called a ‘search connector’ that enables you to run search queries from Windows Explorer. The search connector is displayed in your favourites drop down. Also, you can have more that one search connector if you have a number of different search sites configured in your SharePoint environment and name them accordingly e.g Intranet Search, Team Site Search etc.
Below are the details of how to set up a search connector:
1) Run a search query from your search site (Any OOTB search site) and click on the third icon below which will be at the top of your search results and slightly to the right.
2) Select ‘Add’ to the Add Search Connector prompt’.
Your Search icon will now appear in your Favourites menu in Windows Explorer. The icon can be renamed accordingly.