Wordpress and Opencart user syncronicing

I need someone to make word ress (with buddy ress) to work erfect together. First requirement will be that the users is syncroniced, and the registration rogress should be done in word ress. But if you are able, and the bidding is good, I want it like this: Registration is handeled inside word ress/buddy ress. The user is then also registered to o encart. When a user logs in to one of the laces, it is also logged in to the other lace When a user makes the urchase in o encart, he is logged in, but will then need to write his adress and so. Please tell what of the oints here you think you can work out, and a rice for it. Also if any questions, lease take contact.