Setting languages in Outlook.
In Outlook 2007, the Spelling & Grammar command is available when you create a new e-mail message. Here's how to check text in another language:
In a new e-mail message, select the text that is in the language you want to set.
On the Message
tab, click the arrow under the Spelling
Click Set Language
Select the language that the text is in, select Detect language automatically, and then click OK.