My sister bought MS Office for mac a couple years ago and still has the cds. Will it work if I install it on my new MBP too, as long as I register it under her name? I mean, we live in the same house, I would think a licensed user is probably allowed to install it on more than one machine under the same household right? Has there been a new version released of MS Office since 2 years ago? Or is the version from 1-2 years ago pretty good still?