re: P.S.
Actually, as I think about it, I can't envision any way that Kerry can plausibly use those images at all. And maybe that's another reason the DNC is irritated.
Conservatives usually lack "the vision thing," so that's no surprise.
If the 9-11 Commission report is critical of the Bush administration's failure to prevent 9-11, A DNC ad could list the steps the Bush administration failed to take, show the images to remind the public of the price paid for that failure, and then have a couple of surviving relatives talk about how Bush let them down.
It'd be a cynical manipulation of the public's emotions, but there's no good reason for the DNC to allow the GOP sole exploitation rights to 9-11, other than good taste.