As title says I'm totally and utterly baffled by Office for Mac 2011, in particular getting the correct version installed. To cut a long story short I downloaded the 30 trial for my iMac from MS which is for the business edition. I already have this version for my Mini but it is only for the one licence. Anyhow, I was offered the Home Student version still sealed by someone I work with (cheap). They had bought this version then decided they needed the Business version hence how I came by it. I already have the Business version on Mini so HS will be fine. Before I started I went into Library (running Lion so hidden) preferences and deleted all the plists etc for MS. I then deleted MS Office folder in preferences MS Office in applications and MS data file in documents. Finally checked to see if anything related to MS remained, trawled the entire HD - nothing. I then empty trash shut down and rebooted. I then popped in the DVD and waited whilst it chugged through the install finally putting in my user info for Office. Following this I get the welcome to MS screen follow the prompts and eject the DVD. Now your thinking this should all be fine? err! NO. I have now done this at least four times and each time the "continuing with trial" screen comes up with days left on trial countdown, I have the full Business edition again e.g. Outlook. Funny thing is that despite the DVD chugging away through the install, at no point am I prompted for the licence key? How is this possible, especially given the DVD whirrs and chugs away during install plus the user info I put in is all there. I thought Windows could be difficult but I've never ever come across anything like this before. Anyone think I've missed something?