Payment for extra products

[htmlandrea]

I have to sale a product not present in the product list of my oscommerce, but I want that one customer (not registered) can pay whit credit card this extra product.

 

There's a contrib or a mod for implement this simple operation?

 

I send a special link to the customer or a special temporary login and He have only to confirm the price and pay with credit card.

 

Any suggest?

 

Thanks for your help!

 

Andrea