Make sure you're familiar with all your options: If you get a "boot camp" partition it means you will have to close down everything and reboot when switching from the Mac to the Windows side, and it will use up some of the hard drive space - but as you say, there's plenty to spare. (Also, you have to buy a copy of whichever Windows OS you're using).

If you use a "virtual machine" programme like Parallels Desktop or VMware, you don't need to reboot and can click in and out of it at will, but you may need to upgrade the memory (easy to do, though it costs, as do the programmes). Make sure to get your local tecchie to explain all the options so you make the best choice for yourself.

Best of luck - let us know how you get on -