OS X Server is great, but it doesn’t respond well when you change its IP number. The resulting fiasco will make you think working a fast food job is worth it. Here are some links that won’t make it easier but will at least give you a bootable machine:
Update August 15, 2003: Apple has finally done something, just a little something, to address this problem. They’ve released a script to change the IP address on OS X server: “The IPAddressChange script, which you may download from this document, allows you to change the IP address of a computer using Mac OS X Server versions 10.2 to 10.2 “