Microsoft®
Office Language Pack 2010
Microsoft Office Language Packs 2010 are designed to meet the needs of multilingual individuals, families and small businesses that routinely create or edit documents and presentations in different languages. Language Packs offer a simple and cost-effective solution that provides the power of a fully translated version of Microsoft Office. Available in more than 35 different languages, Language Packs, which are sold individually, can be installed onto any other language version of the Microsoft Office 2010 suites or programs*.
official site
http://www7.buyoffice.microsoft.com/can/product.aspx?sku=10234565&cache=1348758140&action=buy&culture=en-CA