So you read about how much I love VirtualBox and you decided to give it a go. You downloaded and installed VirtualBox (3.1.2 at time of writing) on your Windows computer. Then you grabbed the latest .ISO of Ubuntu Linux (9.10) and walked through VirtualBox’s New Virtual Machine Wizard to create your very first virtual appliance. Or maybe you went the other route and started off with a Linux machine and created a Windows-based virtual appliance.
Either way, now you want to swap files between the two of them.