I can't find SUDU when in terminal

Hello, I am fairly new at this. I am using 9.10 (karmic) and I am trying to install java .
I have downloaded the latest java6u20.i586.bin package and when I open up a terminal window and type sudu I get response command not found as shown below:

simon@simon-desktop:~$ sudu
No command 'sudu' found, did you mean:
Command 'tudu' from package 'tudu' (universe)
Command 'sudo' from package 'sudo' (main)
Command 'sudo' from package 'sudo-ldap' (universe)
sudu: command not found
simon@simon-desktop:~$
I am dual booting with XP and did install ubuntu inside windows. If I install Lucid Lynx will that fix my problem? Or is there an easier way for me to install 'sudu'?

I am still very much at the beginner level, so any help please would be most welcome.
Many thanks

sudo

The command is - sudo

If you install the package - ubuntu-restricted-extras
it will install a load of useful stuff including Java

Basic Toolkit
1) Download the Linux Starter Pack - http://www.tuxradar.com/linuxstarterpack
2) Look at the UNOFFICIAL Ubuntu Guide - http://ubuntuguide.org/wiki/Ubuntu:Karmic
3) Look at Psychocats - http://www.psychocats.net/ubuntu
4) Download the Ubuntu Pocket Guide and Reference - http://www.ubuntupocketguide.com/index_main.html