I have an existing site with simple authentication (through a database) and I want to change it to asp.net membership.
My exisiting login calls a stored procedure that returns the user id and other relevant details if user and password matches. I then store those to the session and each of my "secured" pages checks for the session variables to determine if they are an authenticated user.
Please note that the passwords currently are NOT encrypted.
There could be lots of solutions here so it would be better if there's a brief explanation of why I should do it your way.