[Samba] PCs can't login to replacement PDC

[samba1 at nym.hush.com]

I’m still struggling to swap PCs to a replacement PDC.

Is there a way to reset the machine account (trust relationship) 
between an existing PC (Windows XP) and a replacement PDC with the 
same settings as the original PDC?  I think it works if I take the 
PC off the domain by setting it to a workgroup and then put it back 
onto the domain when connected to the new PDC.  However, I’d feel a 
lot happier if there was another way to do this!

Thanks.