You don't need the ip. You download the program called hamachi. You connect to the server called NPF Bits on that, with the password FPN. This will show you all the other people connected to that server, including McTahr, whose IP will be shown.

Hamachi doesn't use IPs to connect to networks.

I have Hamachi And it says i need a IP
maybe i got the wrong verson or something but it keeps requesting a IP to see networks.

Me and Ald went left until we found a sea. Then we reached it's bottom and there was nothing, so we kept digging downwards for treasure but he had to leave. :(

Wonder if a Terraria Steam Night could work.

You should have LogMeIn Hamachi 2.

When you start it up it should ask you to put in an ID for your computer, this can be whatever you want it to be. Then it should ask you if you want to join a network or start a network. If not you'll have to go to the network menu at the top of the window and select join an existing network.

When you click the join button it should come up with a box that lets you put in a network ID and password.

This screen:

http://i54.tinypic.com/f4myrl.png

Under Network ID you put in NPF Bits.

Under Password FPN.

Oh yeah, my excursion with MuMu gave me a (bad) idea.

Who's okay with draining the ocean into hellworld?

Krylo beat me to explaining it but I just made a lovely picture guide.

Fill in the password as necessary, of course.

The area under Tahr's hellevator is already pretty flooded.

More water couldn't hurt.

Oh speaking of: If anyone needs buckets for things like water moving or obsidian creation or whatever, I have two chests just about full of them at the entrance to the mines. You may BORROW them. Please return any you use. If you accidentally drop a few in lava or something like that, replace them or leave me some 3 iron per if you can. If you can't, it's cool so long as it doesn't happen too often.

ALSO: Whomever left a suit of shadow mail, and some other stuff presumably (I think a fire flower and hermes boots EDIT: Apparently also a demon bow), in the chest by the foot of my bed, I have moved it to the first chest in my study. Reason being that I use the foot of my bed chest for my gear, and I like to have room for when I'm taking off/putting on stuff. And CJ has already been shlubbing THAT chest as extra storage so...

Sorry, that was me, thought all the chests were for donations.