30318 Payment gateway integration

We currently have a membership site that's using only paypal as a payment system. I have accounts with 2 other processors, Verotel and CCbill. What I need is someone to modify their password scripts(similar to paypal IPN) so they insert the correct user information into the database when a new member signs up. If you have any sort of experience with paypal or setting up payment gateways this would be a few minutes of work. Special consideration given to those that have worked with ccbill or verotel before. This should take no longer than an hour for someone who knows what they are doing, please bid accordingly.