We're not able to change the language of the street labels on OSM based maps I'm afraid, as these are produced from static map images. However, Premium members have access to Google based maps in our Premium route planner, which do display map labels in your local langauge, so this would be an option for you. You can find out more abut Premium membership on our membership options page.
I second this question. I am in Greece, and it's all Greek.
Is there a way I can view maps with street names etc translated into English?