You can use OS X's Boot Camp feature to install Windows if you have an Intel-based Mac and the Mac has Mac OS X 10.5 or later. Most recent Macs (except the 2nd gen MacBook Pro) do not have a DVD drive so you will either need a USB DVD drive or install Windows through USB media. If your Mac does have a DVD Drive, you can install Windows using the disc.
Note that Origin does not accept the codes of The Sims, The Sims 2 or The Sims Stories. The Sims 3 or The Sims Medieval codes will be accepted however which will give you a free download copy of the activated game. EA doesn't currently provide support for The Sims or The Sims 2 usually but I decided to help you.
