Hi Mike:

Dennis is correct about clickbank.

Clickbank isn't the only way of handiling affiliates though. There are affiliate scripts available. The advantage to Clickbank is no merchant account required, and they do all the paper work for the fee they charge, something you would be responsible for if you ran an affiliate script.

There is a way to have sales go through Clickbank for your affiliates and still do your own sales through the other one, but it is quite involved and requires doing a duplicate site within your site...which means double the work of maintaining and updating the site...not recommended, but it is doable.

Cornell