New Second Domain Controller Won't Allow '98 to Log Into Domain

We lost our second DC a week ago. I installed a new DC. A few days later

the only Windows '98 PC that logs into the domain gets an error indicating

"the password is incorrect or they do not have permission to log into the

domain." Since the only thing that changed was the new DC, I turned it off.

They were able to immediately log into the domain.

The first DC is named Server1 and the new DC is called DC2.

Any ideas?

TIA

jwkh