Change IP Address OSX Snow Leopard Server

What is the proper way to change the ip address of snow leopard server.  We have a client with a small 3 user system, we need to change it as they present router is behind another router (from office which they rent space) and the double natting seems to be causing issues.  Can it be done without making a backup of the Open Directory and reimporting users etc.?

Thanks, will be working on this tomorrow morning
Peterson50Asked:
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nappy_dThere are a 1000 ways to skin the technology cat.Commented:
NOTE MAKE SURE YOU HAVE A GOOD BACKUP BEFORE PROCEEDING!!

You can by changing the IP.

After you change the IP from the command line run this command:
sudo changeip -checkhostname

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