I have an account on CJ but I got denied for the eBay program on it. I check out this page - http://hubpages.com/request/805/best According to this, I need to get the number in my account page. Is that correct? Even if I'm not accepted by eBay? I need it for a eBay store script.
ebay is no longer managed by CJ, that hubpages page is way old. you can join ebay at ebaypartnernetwork.com or via pepperjam.
you should be able to go to google and type in ebay partner network ...sign up and then you will receive your affiliate link
Are you trying to create a campaign ID? Create a campaign under Campaigns and you will get a campaign ID. Use the campaign ID for whatever you need it for. You can create as many campaigns as you need I think.