Have you tried Google Quick Search Box yet. Google started this project early Jan 2009 for MAC OS X only and recently made it available for Windows.
Google Quick Search Box search for local file, folder, installed program and internet. It allow you to quick launch your installed programs too. I found it better and faster then Google Desktop.z
Google Quick Search Box comes with new Google toolbar. When you install new Google toolbar it will also install Google Mini. Google Quick Search Box sits near the Windows Start button.
Feature & How it Works:
When you click at Google Quick Search Box button then a popup kind of screen open where you can type your search query. As soon as you will start typing you will see bunch of suggestions in the dropdown kind of window.
The suggestion includes files & folders on local machine, installed program on machine (for example you can see Google Chrome in the suggestion list below) and results from Google search engine.
1. Show or hide task bar button, where you only want suggestion from your local machine only or from Google search engine as well and whether you want to show recently open items first thing when you will open Google Mini.
2. You can change how you want to open Google Quick Search Box using shortcut key. Default is pressing CTL+Space bar key.
3. You can change the browser in which result will open
Download for Windows:
http://toolbar.google.com – To install Google Quick Search Box on Windows you will need to install the latest Google Toolbar which comes with Google Quick Search Box.
This is similar to Yahoo AntiSpy. To install Yahoo AntiSpy you need to install Yahoo toolbar too.