I am writing a Paypal IPN script for a client, but so far it isn't working. I haven't been able to get the testing server working so I need to use Krissy's Paypal account to test sending money. I didn't realize that it also worked when money was being refunded, that is a useful tool too, maybe I can incorporate something where it will update the customer's account, though I really don't know if it could be that simple, but you never know right?