password protect web service?

[Geming Leader]

How do I prevent a user from using my web service until he enters the password?

 

[ajeeshco]

Check these links http://www.codeproject.com/cs/webservices/WebServiceAuthentication.asp, http://www.codeproject.com/useritems/WebService_Authentication.asp

 

[Geming Leader]

Thank u very mcuh.

But, It's assuming that u have Web Service Enhancement 3.0.
Also, It's written by c#. And I need VB .NET.