payment module using paypal

[eluser]nandish[/eluser]
Hi guys


I have written out the steps that I think need to take place in the logical flow.

1. Build the Main Form
2. Validate the Form Data upon Submission
3. Transfer the user to PayPal with the PayPal_lib
4. Client fills out payment details on PayPal’s site
5. Client is transferred to a confirmation page
6. I receive the IPN confirmation from PayPal
7. Details [edit]from the original form[/edit] are posted to the DB and emailed to the Client and myself

Is there anything that I am missing for this?

Can any one please explain the flow of payment

Thanks in advance!