heeeeyyy check it out, your a lazy bum and cant be assed to use google, but this was mildy interesting to me so i decided to google "cube rotation virtual machine" because you obviously find it easier to ask here then use a little common sense and use google.
WTF look!!!! second site on google reveals all the magic!!!
http://ubuntuforums.org/showthread.php?p=2333323
im sorry man but that took me 3 seconds to find, and normally i wouldnt mind but thats just lazyness on your part.
and if you are still stuck here another youtube vid that tells you how to do it in the more info tab.
http://www.youtube.com/watch?v=rCietaPQBE4
total searching time by me :30 seconds, total by you.....?