Changing Ip adress on a Mac OS X.2.8 Server

Hi,

Because of major restructuration of our whole network, new VLAN we had to change the IP adress of our Mac OS X.2.8 Server to conform to the new structure of IP adressing. But after changing it, we cannot log with our users anymore, on the server cannot access SERVER SETTINGS even in root and while we can log to the Workgroup manager all of our Netinfo/root users are gone.
Is there a way to change an IP adress on a running Mac OS X.2.8 server or not?
Thanks for any advice.

Please write to me on the forum and if no trouble for you to my mail adress: guenetg@csvdc.qc.ca