It can be annoying to have to change the language to english every time you login because windows 7 has a different default language for the welcome screen.
1. Open the control panel
2. Open the "Region and Language" icon
3. Click on Administrative tab.
4. Under "Welcome screen and new user accounts" section, click on Copy settings button.
5. In the "Welcome screen and new user accounts" dialog box, select and tick the check boxes for Welcome screen and system accounts and New user accounts.
6. Alter the settigs to your preference.
7. Click OK to apply the change.