This tutorial will explain to you how to change language in windows:
Let say you want to add a foreign language to your system, for example Greek (can be any other foreign language).
In this example your system has already 2 languages (Hebrew and English), and you want to add Greek.
Now, before adding Greek the language bar (right bottom corner) has only 2 languages:
Open Control Panel by: "START -> CONTROL PANEL".
In Control Panel window click on "Regional Setting Language" icon.
(In Windows 7 - "Clock, Language, and Region" and "Regional Setting Language")
Click "Languages Tab", Click "Details" - to see your current system languages.
(In Windows 7 - Click the "Keyboards and Languages" tab)
Click "Add" to add another foreign language.
(In Windows 7 - Under "Display language", choose a language , and click OK)
Select the foreign language (In our example Greek) and click "OK".
Now the window "Installed Services" will contain your new Greek language (in addition to Hebrew+English we have before). Click "OK" to close this window and another "OK" to close the "Regional Setting Language" window.
Your language bar (right bottom corner) should be like:
Now you can change your language using the ALT+SHIFT, and write the new foreign language (Greek in this example):
* With LangOver freeware you can change your language without using the ALT+SHIFT, but automatically - Download here.