I'm stuck here, (with screenshot) how do i solve this?

I follow a faq,
http://www.zen-cart.com/wiki/index.php/Basic_Checklist

then i stuck at the payment modules says:
2. In your PayPal account, under "Profile",

* set your Instant Payment Notification Preferences URL to:

  <http://everybody-ebooks.com/zencart/ipn_main_handler.php>


  (If another valid URL is already entered, you may leave it alone.)
  Be sure that the Checkbox to enable IPN is checked!

* in Website Payments Preferences set your Automatic Return URL to:

  <http://everybody-ebooks.com/zencart/index.php?main_page=checkout_process>

* ... and click "install" above to enable PayPal Standard support... and "edit" to tell Zen Cart your PayPal settings.

Where is that, i cant find it in the paypal - profile.

Look at the tutorial here:

https://www.zen-cart.com/tutorials/index.php?article=74

There are other tutorials on there about configuring Zen Cart for PayPal, depending which style of checkout you want to use (PayPal Express is a good one to use but some prefer WebSite Payment Pro).