How do I find a user's IP address?

Hello,
I have found a user who may have created many accounts to vote for themselves for member of the month. I would like to look into this, so I need to see his IP address. How do I do this?
And, if you can give me any other information about checking accounts for multiples, please help.

Thank you,
~Fou-Lu

Hi!

You can check it from the main page of administration panel. There you'll see usernames + ips. Also, you can see from what IP a user posted on forum, by clicking on IP icon, near the quote, edit, delete etc. Like:

Coddy wrote:Hi!

You can check it from the main page of administration panel. There you'll see usernames + ips. Also, you can see from what IP a user posted on forum, by clicking on IP icon, near the quote, edit, delete etc. Like:

Thank you! This was very helpful.
I must have overlooked it. ^_^"