Are there any add-ins for Microsoft word, that spell checks Spanish and checks Spanish grammar.?

Are there any add-ins for Microsoft word, that spell checks spanish and checks spanish grammar. Like how it does spell and grammar check for English words on word. If there are what is the link of the add-in.
The add-in has to be free.
I am using Word 2007

If you have the English version, you already have Spanish proofing tools. You have to install them, usually from the Office CD. After you do that, do the following:

1.Click the Office button in the upper-left corner.
2.Click the Word Options button.
3.Click the Proofing tab.
4.Check Check Spelling As You Type.
5.Check Mark Grammar Errors As You Type.
6.Check Check Grammar With Spelling. Note the Settings button. With this, you can select or deselect many nit-picking checks.
7.Make sure Hide Spelling Errors In This Document is UNchecked.
8.Make sure Hide Grammar Errors In This Document is UNchecked.
9.Click OK.

And to make sure spell checking isn’t turned off for any section of the document:

1.Press CTRL/A to select the entire document.
2.Click the Review tab on the Ribbon.
3.In the Proofing section, click Set Language.
4.Uncheck Do Not Check Spelling Or Grammar.
5.Click the Default button. (To make this change permanent.)
6.Click Yes in the message box.
7.Click OK.

Hope that helps.