realnumber1, it's actually not free, if you look at the small print, there is a lot of people complaining in the forums regarding this, specially if they are moving from edu@live, faculty staff apparently have to pay for it and so on. Not too clued up on it, just skimmed through it.
There are some studid limitations on the P1 program, which is just ridiculous. but it will improve, well, at least I hope so.
What are you using at the moment?