Please take the time to research the problem before you post your question. The experts here are more than willing to help you with a specific problem but you have to do your part to learn the basics. Please take the time to read over the
posting guidelines specifically the section on
Before you post your question.
A great place to start researching is the
MSDN Library. This resource should get you pointed in the right direction. I recommend bookmarking the MSDN Library and using it as your primary resource when developing in .NET.
Some other resources that can help you get started are listed below:
Also I recommend you watch
this video on the topic of Membership, Roles, and Forms-Authentication.
You also may be interested in researching the topic of Windows Authentication.
-Moderator Frinny