How to create a Captcha in ASP.Net
am working on asp.net c#, SqlServer 2005.
I have a Registration Page....In that I want to use Captcha.
User Must enter alll his/her details and the captcha letters before registering the application.
so, please help how to create captcha in asp.net , c#.
Please show me step by step process for creating captcha.
THANKS IN ADVANCE.