I recently installed Windows 7 via VirtualBox for some cross browser testing.  While in development I needed to map localhost from the Windows 7 Guest OS to my Apache server in Ubuntu.  Some quick searching around turned up the following ip address.  All I had to do was update the current localhost line in my Windows 7 hosts file.

10.0.2.2    localhost

I've found the cleanest way to upgrade Ubuntu is to do a fresh install.  Here is a list of steps that I take to upgrade.

I have a friend who recently informed me of their venture into the world of Linux.  I started to build up a good set of links and thought I would share.  Here you go.
 
The Ubuntu Guide - A Wiki for common setup and configuration tasks in Ubuntu.
 
Ubuntu Tweak - Simplifies some Ubuntu configuration tasks as well as application and driver installation.
 

1. Install tomcat6 via synaptic.

sudo apt-get tomcat6 tomcat6-admin

There may be some tweaks that you need to do after install.  I didn't need to change anything, but you can find help from the ubuntu help page for tomcat.

Whenever I start to get overwhelmed with development tasks it is best for me to make a list so that I can see what needs done.  From there I can prioritize and execute.  On my current project I've been using Tasque for simple development task management.  I've found it helpful to prefix my tasks with the language it pertains to.  Tasque sorts tasks alphabetically so it naturally groups tasks of the same sort.  Happy developing!