Panther installed nicely. I had a bit of a battle with email as it didn't want to connect to localhost but 127.0.0.1 worked fine.
Installed the latest Mozilla Firebird. The stylesheet switching for sites like MacSlash is nice.
Saw Spun. Loved it.
RMA'd (is that a word?) my faulty Hitachi/IBM DeskStar drive. Tech support blamed the failure on it being too close to another hard drive. Obviously they haven't looked inside a computer case for a while.
Got Neverwinter Nights. I may be gone for some time.
OK, first off: I admit I don't have MacOS-X. I do have experience with oldfashioned Mac-OS though...I had a bit of a battle with email as it didn't want to connect to localhost but 127.0.0.1 worked fine.
And that one makes use of a "hosts" file. The syntax is slightly different form the one on Unix/Linux/*BSD/Windows, and you have to "import" it via a button in the TCP/IP control panel. But the actual concept is pretty much the same.
Now, as I expect OS-X to behave somewhere in between oldfashioned MacOS and BSD, it's most likely the same concept applies there, too. Just hunt around a little, I'm pretty sure you'll find something...