As far as I know, Bon Jovi, the band, hasn't made any comments at all about the war.

However, back in September Jon was definitely against the prospect of war and during the live webcast asked folks to think twice before going into the desert to fight a war for no good reason. And when the band was in Australia in December, Jon (who you may recall supported Al Gore for the 2000 presidency) referred to President Bush as "George W. Lunatic".

Now that the war has started, Jon has taken the diplomatic route of supporting the troops and has been dedicating "The Distance" to them in concert.