paypal paymeny gateway help

[nigelt74]

Damn i wrote this 2 hours ago and forgot to hit post
Wondered why there were no replies

Hi All
I am working on a website, building a backend db, shopping cart and payment option etc I have most of it working, but I need a bit of help on the paypal side

The site previously had a paypal hosted cart and worked through that, i got rid of that (client didn't want it) put a new cart on, hooked it up to a merchant bank (payment gateway) and it works fine, now I need to add a paypal option for payment,

The merchant bank works like this,

I send a sessionID, Total, orderID through to the payment gateway it hooks up to the bank, customer enters credit card number the bank validates the payment thingie and sends a verification code (and orderID, sessionID )to a return URL (on my site) which then writes the result to the database and if the transaction was successful sends out an email

Does paypal do this or will i have to put a buynow button on my shopping cart and send through the orderID(as the item_name), amount, etc that way and does paypal use return urls and success codes that i can set to automatically write into my database, or will this need to be done manually from the paypal email when it arrives

Thanks
Thanks
Nigel

[grobe]

If no one answers try reposting in PayPalDev (do a Google search)--this is an independent forum for Paypal developers; among other things Paypal technical people answer questions there.

[pp_rb]

Yes, you would need to translate the order information into a Buy Now "button" or use the cart upload feature as described in PayPal's Integration Guide. You can turn on Auto Return in your account Profile to have PayPal customers automatically returned to your site after payment. We recommend using the Instant Payment Notifications to record orders into your database, instead of relying on emails or even on the Auto Return (since the customer could close the browser during the redirect).