Useful (3.5).NET links......

N Tier Architecture & ORM Technologies

http://www.codeproject.com/Articles/48292/Three-tier-NET-Application-Utilizing-Three-ORM-Tec

http://www.codeproject.com/Articles/434282/A-N-Tier-Architecture-Sample-with-ASP-NET-MVC3-WCF

http://www.codeproject.com/Articles/11128/3-tier-architecture-in-C

 

Beginners guide to a secure way of storing passwords

 

http://www.codeproject.com/Articles/425150/Beginners-guide-to-a-secure-way-of-storing-passwor

 

Thanks