Turning off services NetInfo?


So, NetInfo, huh? Hm. I'm a Solaris Admin (very little BSD) and I'm a little hazy on how to turn services off in OS X. No inet.conf (okay, there is, but it's not used) and I can't find the start scripts for services like nfs, sendmail (are they turned off by listing them in /etc/hostconfig?). I don't see how NetInfo can be used to disable services w/o permanently deleting something).