We need help to set up PayPal, so client can pay to us one amount now and a similar amount 21 days later. At the same time as making the payment we need to receive from client various information, mentioned on our form, to be able to process order. If possible the clients should be supplied with a standard invoice each time or some kind of confirmation and a few basici information. We want to show PayPal on our website, with all the cards available, in a positive and friendly way. We are also concidering to add later on - other ways of payments and need help with that. Keywords: API, eCommerce, Paypal