i need a root?

In order to "get root" on a Unix-derived machine, the standard way is
to log in using the username "root", and the password for the root
account. This is roughly equivalent to the "Administrator" account on
Windows NT-derived operating systems.
Some systems do not allow the "root" user to log in directly (this is
common for system accessible over the internet), and require you to
first log in as an ordinary user, and then use the "su" command to
become root. So once you have logged in to a system as an ordinary
user, enter the command "su" and type in the password for the root
account when prompted.
It is not wise to be root all the time, as illustrated in the following article:
http://www.cse.psu.edu/~groenvel/root-shell.html

Or, perhaps this is what you were looking for:
http://www.thinkgeek.com/tshirts/sysadmin/280d/

If you would care to clarify your question, I will happily clarify my answer.

Here's a nice one:

http://cropandsoil.oregonstate.edu/weeds/Redroot_pigweed/root.jpg

I believe you might be referring to root access on a Unix or Linux
computer. Having root privileges means you have administrative access
to the server or workstation. Some programs may require you to have
root access in order to install or run them.

From an Australian`s point of view, this question is inappropriate

RAH! RAH! RAH!