12157 paypal integration

I need some programming done to my site. I need someone to create a paypal integration that would work more like in the following form. 1. User need to register and pay using the site. (this information should be stored in a database for marketing purposes, should the site need to contact the member using email) 2. User need to pay using paypal (payment amount should be adjustable) 3. User need to be able to get a userid/password. 4. User should be able to use that userid/password during their subscription month. 5. Users that do not renew their monthly subscription should not be able to use the site. This should be fairly easy to do job, especially because paypal generates the script. My site is being hosted at godaddy.com. It is PHP based site. It is currently using coppermine photo gallery software. Site url is www.nangadesi.com. Only those who can work immediately on this project should bid. thanks.