Does this plugin?

Hello,

Just to be sure, does this plugins allows to replace the a hrefs value in all contents of a page?
For instance, I have 4000 pages on my website.
The urls have been changed when I moved to wordpress, and I want to rewrite automatically all urls : http://www.website.com/a to http://www.website.com/b
This plugin should do the trick, right?

Thanks!