Thesaurus program?

[Rachel]

Does anybody know of a good thesaurus program that works without having to highlight the word, right clicking, going to thesaurus, and then seeing alternative words? I've been using Book Writer, but since the thesaurus is one of the tools I use the most, it seems so cumbersome.

I'd prefer one that shows both my original article, and the changed version, and that has the thesaurus in a box off to the side. The only thing I've found like this is an SEO tool that's really made to write hundreds of articles that all say the same thing with different words. I only want to write my one article, and the cost on that program is high.

Thanks for any suggestions.