ClickBank has been a VERY reliable company. Account activation is usually completed in 24 hours or less. Emailing this company will always get you a response, usually within 24 hours. Refund requests are fulfilled within 24 hours. The support has always answered my questions thoroughly and quickly, eliminating the need for a back and forth email escapade that gets nothing accomplished.
Support is friendly, and easily accessible by email.
This company gets my highest recommendation, and is the ONLY company that I've used personally that I feel comfortable recommending. You won't need a secure server site as we will sell the book for you and credit your account with the comission. Simply click on the Clickbank logo at the top of the page to join and you will be given a nickname. Then copy the graphic of the book and templates and put them on your web site. Alternatively you can just include the link in a newsletter or ezine.