Returning an SDL Trados License Activation Code

Online Activation with the SDL License Manager

How to install windows 7/XP on a mac using parallels

This is the "non-free" way to install windows as a virtual machine on your Mac so that you can use windows software.

Do you need to run windows software inside your Mac?

This is the "Free" method to put windows inside your mac and run windows software without rebooting your Mac and in order for you to have your Mac OS X features available all the time.