With Windows Vista Ultimate, you can download language packs and then install them as default language of the system. Such an operation does not replace the language used by the screen-session home Windows Vista; it left in its original language - for example, English. Let's see how to address this problem through a small intervention in the Control Panel.

Open the Start menu and then click Control Panel in the sidebar on the right.

From Home Control Panel, click the Edit module keyboards or other methods of entry of heading Clock, language and region.

In the mode of display classiqu e, double-click on the Options icon regional and linguistic minorities.

A new window opens - whatever the method below. Go to the Administration tab and click the Copy button in the reserved section… of the accounts reserved.

A dialog box will appear offering to cut your linguistic and regional accounts:

• In default user (new users): apply the current language to new user accounts;
• Accounts system (local system, local service and network service): check this option, it can apply the language chosen by default to the whole system whose screen session host;

Confirm your choice to 2 times by clicking on OK.

Restart the computer and see the result: the screen session is now home to french or in the language that you determine beforehand.

For the record, know that the use of another language in implies also a change of keyboard. For example, if you install Vista in English (which is quite possible with DVD Recovery) and that you download and install the pack of french language - via Windows Update, the session host will be in English. But the English using a QWERTY keyboard, it goes without saying that the input field password will QWERTY and not AZERTY which can cause catastrophic problems if only the latter contains special characters … Then you have to do a search on Wikipedia via another PC and then seize them properly, the keypad is essential to enter characters via the ALT + N °.

Take your precautions, I went through there.