You can download it here for free, download which ever version you have on your wifes laptop, 'mount it' to disc to make a bootable cd, then use the product key on the laptop, should all work okay.

http://heidoc.net/joomla/technology-...download-links

F.A.O The Mods - These downloads are from Digital River and not torrents or illegal. Digital River is Microsoft's official distribution partner, so these downloads are secure and legit.

Office, Vista and Windows 7 also available if anybody else is interested
http://heidoc.net/joomla/technology-science/microsoft