MS office installation question

I bought a new computer a couple of months ago, and it came pre loaded with a trial version of MS office. When I open Word or one of the other programs, I have been getting a warning that my trail period is running out at the end of the month. Or course I can’t get the message to show up at this point. (figures)

Today at Sam’s Club I read the fine print on a copy of Student/Teacher edition of Office and discovered that I am eligible for this product. WOOT! way cheaper than buying the full version. *

I believe that my already installed version of office is small business, Student/teacher is the same as base office.

So my question is what happens if I try to use the activation code with student/teacher on the version of Office I now have installed?
Will it work?
Will it fail, and require me to install student/teacher then activate?
Will it fail, and require me to uninstall the version I have now, and then reinstall?
Will will it say, screw you, and invalidate my activation key?
Or will Bill’s secret ninja minions come cut my balls off?

*My daughter is a full time student, and the license is good for family members up to three computers.

It will fail. The key you get with the Student/Teacher Edition will work only with that edition. You will need to install the Student/Teacher edition. You could probably install it over the top of what you already have, and “upgrade” it, but you are probably better off doing an uninstall of the current version and then a clean install of the new.

Correct. I recommend an uninstall/reinstall which is probably the only option anyway but the uninstall won’t take that long.

That is kind of what I thought, but I figured it was worth a shot.
Thanks for the answer.