This app alters Spanish or German system keyboard into one of the supported languages, or extends the original English keyboard.

That will allow you to write text in your local language anywhere with your Windows Phone 7 device.

Supported keyboard languages:

Russian, Ukrainian, Danish, Norwegian, Swedish, Finnish, Polish, Romanian, Czech, Hungarian, Bulgarian, Estonian, Latvian, Lithuanian, Bosnian, Croatian, Slovenian, Serbian, Slovak, Greek, Portuguese, Turkish, Hebrew, Macedonian, Thai (thanks to varavut for the layout!), Arabic, Persian (Farsi), Georgian, Mongolian, Icelandic.

Download Windows Phone Native Keyboard