Misc: set up a virtual box

VirtualBox is a powerful virtualization software for scientific research usage. Very often, computational biophysicists use linux in scientific computing. On the other hand, when writing a manuscript in collaboration with inter-disciplinary groups, MS word is often commonly used, which sadly does not have a linux version. Lucky for those Mac users:) One great feature of MS word is track-changes and easy commenting. Under this circumstance, a VirtualBox with windows/office/Endnotes would be a great choice. Right now, VirtualBox has been added to the ubuntu repository. You can easily install the program via apt-get. Next thing is to instal a windows partition. The beauty is that once a VirtualBox disk image file is created, it can be used repeatedly without reinstall it. For DRL members, here is a customized vdi file.