Add Membership Provider to existing ASP.Net project

hello,

I had successfully created an asp.net membership provider project independent. 

Now, my boss wants me to merge or combine this new membership provider project into my existing project.  i tried to find on Google to see if there are any people doing that so they can show me, but i can't find anything.

Can you give me some suggestion/advise where i can find the key word to combine the asp.net membership provider into my existing web application?

Thank you.