I've written this tutorial to show how virtual hosts can be added to GNS3 using VirtualBox, creating a nicely working server-client network. GNS3 is very powerful, and I chose VirtualBox since it's free, and hence easily accessible to most people.
It's a pdf, so I've posted it on scribd due to the current security fears. If for whatever reason you can't access that, you can check out the direct download link.
Scribd link: http://www.scribd.com/doc/38661361/Virt ... k-Tutorial
Direct Download link: http://filevo.com/58vnub9m6bt2.html
This is my first tutorial, so if any part is difficult to understand, please do tell me.