I will try to find all the rebuttal information on this claim that was made over 10 years ago. (you do realize this was published in 2004).
Here is a link to help you with where people think the heritage breaks down.
http://www.africaresource.com/rasta/sesostris-the-great-the-egyptian-hercules/the-black-roots-of-ex-president-dwight-d-Eisenhower/