Enabling Editing Languages for Office Programs
If you want to edit text in more than one language in Office, you have to install the appropriate language features. Some language features are specific to Office, whereas others are set in the Windows operating system.
For Office, you can enable additional editing languages so that you can work in those languages. To do so, choose Start 
All Programs 
Microsoft Office 
Microsoft Office Tools 
Microsoft Office 2007 Language Settings. The Microsoft Office Language Settings 2007 dialog box appears. Click a language to add the Available Editing Languages list at the left (Figure C-2); then click Add to make it one of the Enabled Editing Languages. If you want to use another primary editing language, choose it from the drop-down list. Click OK. If you changed the primary editing language, click Yes to continue. Close and restart Word so that the change takes effect.
After you’ve applied a new primary language, it becomes the language used by the spelling and grammar checker and more. For example, if you make French (France) the primary language, the automatic spelling check will suggest French corrections for your typos, as shown in Figure C-3.
Figure C-3. Get help for your bad French by changing primary editing languages.
Tip
The status bar displays the name of the primary editing language in use on the Language button. To apply another editing language to selected text within Word, click the Language button, click the desired language, and click OK. Make this choice when you start a new document to change the editing language for the entire document.
You can install other keyboard layouts for typing text in other languages under Windows. In Vista, you do this in the Clock, Language, and Region area of Control Panel. (In XP, it’s the Regional and Language Options section.) In Vista, choose Start 
Control Panel and then click Change Display Language under Clock, Language and Region. The Regional Language and Options dialog box appears.
First, click the Change Keyboards button on its Keyboards and Languages tab. Click the Add button in the dialog box that appears and then use the tree in the Add Input Language dialog box (Figure C-4) to select the keyboard to install. Click OK.
Figure C-4. You can set Vista up to enable you to type in another language.
Back in the Text Services and Input Language dialog box, choose the keyboard to use from the Default Input Language drop-down list at the top and then click OK twice. You can then close Control Panel.
Tip
To see the keyboard layout (characters) available for the selected keyboard, you can display the On-Screen keyboard, discussed later in the “Accessibility Features” section.