Make a screencast of installing Aegir

So when we do presentations or demos at Drupalcon or at other events we have to do this scary install process, which isn't that scary any more, but it can go wrong very easily. Lots of people have suggested that we should just show a video instead of doing the install process. I'm not convinced either way, but it would be nice to have the choice of showing it, and people who want to present Aegir installing can, without the stress of actually installing it...so:

The task is to install Aegir and make a screen cast of at a high resolution so that we can use it the future. This should be fairly simple to do, and is quite a good 'beginner task' I think.

Install instructions: http://community.aegirproject.org/installing