Re. Bootcamp

I assume you actually own a Mac Mini rather than a Cube, since the latter lacks an Intel processor and won't run Bootcamp at all, let alone well.

Memory requirements depend on what version of Windows you'll be running. Bootcamp needs you to make space on your hard drive for Windows and its applications, and that too will govern whether you can use Bootcamp.

So check what version of Windows Sage and your word processing application run under, then have a look at Microsoft's website for the appropriate system requirements and see if they match up with how much memory you have on the Mac - 512MB - and how much free disk space you have for the OS and the applications you need to run.

You'll need to buy a copy of Windows if you're to stay legal, and that may limit you to Vista. For that, you'll need to upgrade your Mac's memory to 1GB.