How to make Register beside PRICE in Product page?

here is what I want to display in product page,
If the client haven't login their account, request them to register or Login.
it will show as below:

I don't know how to make it happen. Also if this can be in the core would be very nice.

Anyone who can help? Thanks!

What I want is when the client doesn't login, show [Login] [Register] instead of price. Once client logged in show the price only. do we have that option in Zencart ?

Did you peek at the settings in the Configuration ... Customer Details ...

Customer Shop Status - View Shop and Prices
Customer must be approved to shop
0= Not required
1= Must login to browse
2= May browse but no prices unless logged in
3= Showroom Only

OK, I think I didn't explained it clearly ! as I meant the same layout like the image above ..

Price: [Login][Register]
Availability: In Stock ....etc

Currently, the function zen_get_products_display_price controls the Price display and the function zen_get_buy_now_button handles the buy now/add to cart ...

You could customize either the functions or the tpl_product_display_info.php template using your templates and overrides to control what is displayed based on the current:
$_SESSION['customer_id']

when that is the value of 0, then the customer is not logged in ...