Your Mac runs Windows using Boot Camp. VMware Fusion safely runs Windows inside Mac OS X as if Windows applications were a part of your Mac.
VMware Fusion is the easiest, most “Mac-friendly” way to run Windows on the Mac. A Mac-first user interface ensures that users get the features they expect, like customizable tool bars, searchable Apple help, Boot Camp support, dock notification integration, and more.
9WR – VMware Fusion: Run Windows, Linux on your Mac, inside Mac OS X.