I think we may have responded to you by email already; here was our reply in case anyone else may be reading along here:
This help page explains how our built-in affiliate system and related settings work:
http://www.e-junkie.com/ej/help.affiliates.htm
We also have a help page for affiliates, explaining how the system works from their perspective:
http://www.e-junkie.com/ej/help.for-affiliates.htm
In order to use our affiliate system, you would need to be using our purchase buttons to sell your products online. Once you set up your products in E-junkie Seller Admin, we provide you with ready-made HTML codes for your cart buttons. You would simply copy the codes from us and paste them into the HTML source code of your own Web site pages, wherever you want our buttons to appear among your own layout, text and images. We're not familiar with WebStarts, but as long as they allow you to paste HTML into your site, it should work fine with us.
We also provide ready-made affiliate sign-up link code to copy and paste into your site. Affiliates would click your sign-up link to register for their own E-junkie account, where we would provide ready-made hop link code for them. They would then simply copy that code from their Affiliate Admin and paste it to their own Web site, so their customers would click through that link to reach your site and place their orders there.
Our system is designed to be really quite straightforward to configure and set up, and you have a fully-functional 7-day free trial period which begins as soon as you register for an E-junkie login. Our Getting Started help page is a good place to begin setting up your E-junkie service:
http://www.e-junkie.com/ej/help.sell.htm