Google Desktop makes searching your computer as easy as searching the web with Google. It’s a desktop search application that provides full text search over your email, files, music, photos, chats, Gmail, web pages that you’ve viewed, and more. By making your computer searchable, Desktop puts your information easily within your reach and frees you from having to manually organize your files, emails and bookmarks.

Google Desktop doesn’t just help you search your computer; it also helps you gather new information from the web and stay organized with gadgets and sidebar. Google Gadgets can be placed anywhere on your desktop to show you new email, weather, photos, personalized news, and more. Sidebar is a vertical bar on your desktop that helps you keep your gadgets

Quick Search Box

The fastest way to search the web, and your own computer, is to use the Quick Search Box in the center of your desktop (simply press the “Ctrl” button twice to call up the search box, and press “Ctrl” twice again to hide it). Just type a few letters or words into the search box and your top results pop up instantly. You can also use it to launch applications without having to surf the Start menu; for example, you can launch Microsoft Word by typing “wor” into the Quick Search Box and selecting “Microsoft Word” in the list of results that appears. Or, simply type in your search term and press “Enter” to search the web.

More info can be found here

Can Be Downloaded from here

Have fun seraching your comp ^^