Finally, got the server back up, this time with Mac OS X, just the plain ol' user version, instead of the Server edition. So, now I'm actually running my sites on software I legally own. Huzzah!
So, just a couple more changes left to the Apache web server config file (to add the other sites I'm hosting here), with a little digging into the tasty Unix underbelly of Mac OS X. Mmmm...