Designing a new application in asp.net 4 I have to make a decision how to use a MS SQL Membership API along with my own data in the MS SQL data base. Firstly I need to store
You should consider writing your own custom membership provider that uses the tables/data as per your need (instead of using ASP.NET provided schema).
See this MSDn sample (schema, code) for writing a custom provider - this sample uses OLEDB to access database. Yet another sample is here - it uses active directory as a store.