You will eventually get hit by the duplicate content filters if you use Wikipedia content verbatim. I don't think Bing is very concerned about that, but most sites will never develop an authority level greater than Wikipedia.
I suggest that you either completely re-write the content, or as Will suggests, add additional content. If you are going to add content, try to add more content than that which you copy from Wikipedia. You might still get caught by the filters when you do this.
I frequently use Wikipedia for research, but I never copy their content. As an SEO professional with 13 years of experience, I have seen way too many sites that have been wacked by G for using duplicate content, which makes me a bit paranoid about it.
Wow! That has to be one heck of a large file.
Originally Posted by Will.Spencer
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin