Installing and removing languages in POSReady is really easy.
All you need is the installation DVD.
Installing Additional Languages
1. Insert the DVD into the target machine's DVD drive — an autorun splash screen will appear.
2. Click "Install additional languages for the POSReady user interface"
3. Select the languages you wish to install
4. Select the language you wish to use as default for all new user accounts from the dropdown below the language list
5. Click Install
6. Reboot
Changing the Language for an Existing User
1. Open Control Panel
2. Open Regional Settings
3. Switch to the Languages tab
4. Select the language you wish to use from the "Language used in menus and dialogs" dropdown
5. Click OK
6. Log off
7. Log back on