Language

Install languages
cd /var/www

# German: http://www.magentocommerce.com/extension/413/
./pear install magento-community/Locale_Mage_community_de_DE

# French: http://www.magentocommerce.com/extension/414/
./pear install magento-community/Locale_Mage_community_fr_FR

# Russian: http://www.magentocommerce.com/extension/391/
./pear install magento-community/Locale_Mage_community_ru_RU

Configure language (Store View)
Admin Panel > System > Manage Stores

[ Create Store view ]
Store: Main Website Store
Name: German
Code: de
[ Save Store view ]

# english
Store: Main Website Store
Name: English
Code: gb

# French
Store: Main Website Store
Name: French
Code: fr

# Russia
Store: Main Website Store
Name: Russian
Code: ru

Configure language (Locale)
Admin Panel > System > Configuration
Current Configuration Scope: German

General > General
Locale options:
Use website: check out
Locale: German (Germany)

do the same steps for all another langages

# sql (broken???)
< INSERT INTO `core_store` VALUES (0,'admin',0,0,'Admin',0,1),(1,'default',1,1,'Default Store View',0,1);
---
> INSERT INTO `core_store` VALUES (0,'admin',0,0,'Admin',0,1),(1,'de',1,1,'German',0,1);

DELETE from core_store WHERE website_id = 1;
INSERT INTO core_store(store_id, code, website_id, group_id, name, sort_order, is_active) VALUES
(1, 'de', 1, 1, 'German', 1, 1),
(2, 'gb', 1, 1, 'English', 2, 1),
(3, 'fr', 1, 1, 'French', 3, 1),
(4, 'ru', 1, 1, 'Russian', 4, 1);