The Push2Run site is written in English only. However, if you need to you can translate it with an online tool such as this one:
http://itools.com/tool/google-translate ... translator
Also, the Push2Run program itself is only available in English.
Having that said, I do believe some people use it with triggers sent in other languages (for example French). If anyone has any experience with this, please feel free to add your comments.