If you want to replicate a virtual machine in VirtualBox, you have two options: Export and import to a separate computer or Create a clone.

I've got an ESXi box running the free version of 4.0.0 with a 2008 R2 VM on it. I'm trying to import the VM into my 4.1 vSphere cluster. I've powered down the machine, made sure it wasn't set to ...