Registration form info?

I have finally managed to set up my subscription page with three membership options. Each have a a sign Up button but when clinked on to signup it goes straight to the PayPal payment page.

Not sure if I missed it, but is there a registration form that a user will complete before committing to a subscription capturing name, address and username etc?

If so please tell me how to integrate between the PayPal payment page?

http://websiteinspector.biz/subscriptions/

Thank you

Regards
Ken