If anything, it's even more damning than the first one. Here's the link.

Their book, Unfit for Command will be #3 on the NYT Bestseller's list.

And according to CBS News, the ads appear to be having an effect:

The appearance of his fellow Vietnam veterans at the Democratic convention helped John Kerry’s support among veterans, but the recent attacks on his Vietnam service may have moved veterans’ support back toward George W. Bush now. Kerry is running well behind his opponent among veterans; now, 55 percent of veterans back Bush, and 37 percent back Kerry. A few weeks ago, both candidates were tied among veterans.

PRESIDENTIAL CHOICE AMONG VETERANS
(Registered voters)

Now
Kerry-Edwards 37%
Bush-Cheney 55%
Nader-Camejo 1%

Post-Democratic convention
Kerry-Edwards 46%
Bush-Cheney 46%
Nader-Camejo 1%

This is a poll that commonly oversamples Democrats, so the change may well be even more pronounced.