Games Radar gave it a 70%. They're listed on Metacritic but not on GameRankings but comparing their previous review scores of Wii games to the averages on GameRankings it's likely that the game will end up with an average somewhere in the 65-75% range on GameRankings.
source: http://www.gamesradar.com/us/wii/game/reviews/article.jsp?articleId=20070731132759629013§ionId=1000