Can’t change ip address w/ Active Dir.

I have a server installed with Windows 2000 Adv. Server. I gave it an ip address of 192.168.0.11. I then ran DCPROMO and installed Active Directory. I need to switch the ip address to 192.168.1.11. When I do it causes Act. Dir. to stop functioning until I change ip address back to original. How do I get around this?