WRITING TOOLS - Thesaurus

I recently had a great thesaurus add-on pointed out to me. It installs quickly, sits quietly on your XP or Vista taskbar, and is seamlessly invoked in your writing software (say FlashWRITER ;-) of choice via a hotkey. 

I have been using it for a while now and it works a treat.

Description from web site:

WordWeb is a comprehensive one-click English thesaurus and dictionary for Windows. It can be used to look up words from almost any program, showing definitions, synonyms and related words. It includes pronunciations and usage examples, and has helpful spelling and sounds-like links.

You can download a free version at : http://wordweb.info/