When installing software that is part of the program (such as the MSN Toolbar), you will be asked if you want to join the program. If you join, the Customer Experience Improvement Program runs on your computer, without interfering with your tasks or how your computer functions.
During computing sessions, small amounts of information about how you use your computer are sent to Microsoft, to be analyzed for aggregate trends and usage patterns. This information is then used to improve the quality of Microsoft products and to respond to the needs of our customers. Aside from joining the program, you do not need to do anything else.