To change the display language on Windows 7, open the Control Panel, and change the view to Large icons. Click the Region and Language icon and select a language from the menu. If you don't see what you're looking for, click the Install/uninstall languages button to add it to the list. Once the language is selected, click Apply, and then follow the on-screen instructions to log out and back into Windows 7 with the new language. If you don't see the correct language, return to the Region and Language panel, select Administrative, and then click Change system locale. Select your language and reboot when prompted. To change the keyboard or input language, open the Control Panel and change the view to Large icons. Click the Region and Language icon. On the Keyboard and Languages tab, click the Change keyboards button, and click Add to install another language. Check the box next to the language you want to install, and then click OK to install it. You can now switch between input languages using the taskbar language menu near the bottom-right corner of the screen.