Urgent Policy question

Fortunately this is in a lab setting but i still am in need of dire help.
I was changing policies and wasn't paying too close attention and i must
have changed the policy for logging in locally because no PC can log in to
the domain, and i can't get into the DC (even with the Admin account). How
can i get into the PC to change this policy setting. i am getting the message
"The local policy of this system does not allow you to logon interactively"
from any PC on the domain. The only way for other workstations or member
servers (2) to log in is locally.
Please help, i do not want to rebuild this DC! i have a lot of time and work
into this. i made a stupid mistake and am now paying for it.

Thanks,


.