57228 Need to integrate Worldpay

Hi, I posted this project before but could not complete due to commitments, so here it is again and with an additional requirement. I have a membership site up and running. It uses PayPal to accept subscription payments. Once payment is accepted, the subscriber is taken to a username/password creation page on my site to finish registration. This script needs the confimation from PayPal before it will accept details. So if the notification from PayPal is delayed, the subscriber cannot complete and I get emailed from them. I have two requirements: Upgrade/improve this registration script. It is really basic. For example, users cannot change their passwords/usernames, they do not get any notification when their subscription runs out, and so on. So I need a much better membership script. Secondly, I need to integrate this new script with WorldPay to replace PayPal. I feel WorldPay Select Junior is suitable. I have signed up to WorldPay and just need to make sure everything is working correctly before I go live. Further details are available, but those are the basic requirements. The winning bidder must have experience of membership scripts AND WorldPay, please, along with PHP and MySQL. Ideally, if there is some way of automatically generating a username/password upon successful payments being made, that would be great. Perhaps the subscriber can receive these in an email following payment. They could then change their details to something more memorable. Happy Bidding!