I'm learning Python at the moment... and as part of that I've been looking at creating platform-independent applications.

The first step, I figured, was to get a basic window operating cross-platform.  I did this, no problem.  I did some reading on tkinter, which seems pretty straight forward (apart from being Tkinter in Python 2.x and tkinter in Python 3.x - note the case change - pretty annoying for converting apps from the old version).  So that was all good anyway.

As part of my C programming course recently I needed a Linux environment to work in, so decided to give Sun VirtualBox a try as a way to run Ubuntu 9.10 on my Laptop (running Windows 7).  It works well, but required a little tweaking to get going properly.

First, you need to install guest additions - to do this you need to choose it from the devices menu at the top of the VirtualBox window... this mounts them as a virtual CD ROM drive in your Linux install.