Login with 3 tier? any tutorials

I have been searching for tutorial or small apps which shows login or user mgnt system with 3 tier architecture in asp.net (c#)but most of them just rely on login control of asp.net and I have not found any very good resource for it…
any one any help…
also can any body suggest me small application(more than just framework) in 3 tier architecture…

thanks…
I am not looking for just starter 3 tier intro tutorial…

Well, I don’t know if this will help you, frank1, but I found this at Amazon.com. http://www.amazon.com/Registration-Application-ASP-NET-Tuturial-ebook/dp/B00B95QESW/ It might contain what you’re looking for. If you were wanting video-based tutorials, you might peruse the ASP.NET and Channel9 sites for information. Out of curiosity, is there some reason you don’t want to use the Membership classes? They already contain a lot of the interfaces needed to build an nTier-style login. Also, you should check out Pro ASP.NET 4 in C# 2010 by Matthew MacDonald and Adam Freeman. This is an excellent and comprehensive book. Happy coding!