SQL database integration

**** all software mentioned below is already bought and liscensed to be modified as described below by the developer ***** I want to run a social networking site ([login to view URL]) with a SQL database as a backbone where all visitors' data is stored (name, email, age etc). At the same time I want to use a newsletter software ([login to view URL]) . As I do want to prevent people to have to subscribe 2x, i e for registration and for the newsletter, it would be great to merge/link these 2 databases. please see link below for technical details / interface provided by interspire: [login to view URL]