VnDic Quick Lookup
This tool will add a small entry to the right click menu of Internet Expolorer. It will enable you to lookup for any word while browsing the web easily and quickly, without having to start any dictionary application, or visit any dictionary website. All you need to do is to use the mouse button to select the word you want to search for, right click it and select VnDic lookup... from the menu. It will bring you directly to http://vndic.net website and search for the word in all dictionaries.
The application is very small, only 195KB in size, and can be uninstalled from Add/Remove programs in Control Panel. After installation, you have to close all running instances of Internet Explorer for the change to take effect.