IDK but i don't understand why people are so stupid when it comes to the bing on this phone. OK....all you have to do is download google maps and google voice search from the marketplace(i think the voice search actually may come with google maps...just download everything that says google ok). Then set an icon on you're main screen for google. I have the icon that brings me directly to google, and then i have the voice search icon right above it. It works EXACTLY the same as on any droid except you can't get the widget, but who cares.
an easier way to do this is to just set a bookmark to google.