Need to create 3 iTunes accounts on one computer?

So we have three iPhones that currently share the same iTunes account, and we really need to create separate accounts for each one, because all of our information is being shared. How do we create the accounts without losing all of our data? I really need an answer As soon as possible.

Go to your iTunes folder on your computer, you can find it in "users", "my music", "iTunes", "media". If you are all going to share the same media then make two copies of the media folder giving each copy a different name. Now you can create a new account in iTunes for the other two people and just import the media folder for each person.