In the annals of stupid things done by Rik

How do you say to a publisher, who is very, very enthusiastic about developing and publishing a book based an idea that you had a few years back, and who wants to put your name on the front of the book, and pay royalties to you on each book sold - even though the publisher has done all the running with the book's development and you've contributed, basically, sod all except the original idea - that you don't want your name on the front of the book and don't want to be paid the royalties?

"Thank you and please send the cheque to ..." is not an option.

I've tried the Nice Rik approach; it's not working. Publisher doesn't want to listen to Rik's whines. But the publisher doesn't deserve the Nasty Rik approach - not yet, anyways.