If you have a fast internet connection you can download it. but go in and search and destroy any traces of previous Office test drive versions first if you have any. Maybe someone else can tell you if there are critical fiels to find and delete.
No shivering here. M$ Word for Mac is by far more stable and feature filled than for XP. I am not happy with Micro Soft's monopoles), but their Office suite is good set of tools. Luckily, if Apple's competing office software dont catch on, China, India, or Pakistan will likely code a less expensive, more feature filled product with in the decade.- But digress-