They do make it a little difficult to find the banners, here are the steps to get there:
Once logged into the affiliate section under "Quck Start Guide" select "Linking Codes".
Now select which plan you are using 40% rake or 10% referral, click "generate".
This will generate a bunch of landing pages under the section, select the lading page you like and click "Get Code".
Now you will see all the banner size selections.
Hope this helps.
