The following links are useful if you intend to develop and implement your own Code of Conduct.
CCAB has developed a useful guide on Developing and Implementing a Code of Ethical Conduct.
The Institute of Business Ethics website has a section devoted to Codes of Conduct, including how to develop and implement one. It also contains links to several examples of codes.
After you have written a draft of your Code, you may wish to consider 20 questions to ask about your Code of Conduct [from the July/August 2003 issue of Ethikos].