498498 authorize.net ARP and oscommerce setup

i have a modified oscommerce site i need someone that knows the [login to view URL] APR setup. we currently have paypal subscription setup and need to add the [login to view URL] APR to this site. we can use the [login to view URL] AIM we currently have and add the APR to the setup so after they make the purchase we set the APR for the client. we also are using post affiliate pro on the site. we will set this up once you get this APR working. i have this job posted earlier today and the guy that was talking to me is gone now. i need this done asap. its not trivial to anyone that knows what i need. ask any questions in pmb and i will respond asap.