This excerpt taken from the AAPL DEF 14A filed Apr 16, 2007.
Independent consultants and advisors. The Committee has the authority to retain and terminate any independent, third-party compensation consultant and to obtain advice and assistance from internal and external legal, accounting and other advisors. During fiscal year 2006, the Committee engaged Frederic W. Cook & Co., Inc. (F.W. Cook) to advise on compensation matters. F.W. Cook has not provided any other services to the Company and has received no compensation other than with respect to the services provided to the Committee.