Webmin is a web based administration system which a lot of people use. I still haven't decided if I am going to use it on my web server, or not. The main reason being on the Ubuntu web site they recommend AGAINST it.

In case I ever want to install it, I put the instructions here on my web site, for future reference:

After checking out the following web page on my desktop:
http://www.webmin.com/download.html

I determined the latest version for Ubuntu was:
http://prdownloads.sourceforge.net/webadmin/webmin_1.610_all.deb

So, back in the Putty window, I entered:
mkdir downloads
(made a dir in the administrator's Home directory)
cd downloads (put myself in the above dir)
wget http://prdownloads.sourceforge.net/webadmin/webmin_1.610_all.deb

Webmin relies on some packages to be installed:
sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libapt-pkg-perl apt-show-versions

I then installed Webmin with the following:
sudo dpkg -i webmin_1.580_all.deb

After the installation, you can access webmin with a web browser
http://YourServersIPAddress:10000