You would not be able to change the title of the shipping address to billing address. There are also not parameters specifically for shippping address that you can pass over with Website Payments Standard. If your cart supports it, you may want to use Express Checkout instead of Website Payments Standard. Express Checkout would give you more control over the checkout flow, and you would be able to pass over a specific shipping address using the shipping variables. Also i am not sure what you are rferring to by no address showing. ARe you referring to no shipping address or no shipping address or billing address is being displayed? If you do not want any shipping address displayed, you can use the variable no_shipping and set it one of the values below. But keep in mind that if you set it to not require a shipping address you will not get a shipping address in your details if you are shipping items.
0 – prompt for an address, but do not require one
1 – do not prompt for an address
2 – prompt for an address, and require one