Multiuser access in asp.net 2.0

Hi All,

I am developing a web application using ASP.NET 2.0,VB.NET & SQL SERVER 2005.

in my application i want only 4 user(multiuser) can access web form and they will be access web form as a same time also.

and suppose if 4 is already login and some other user is trying to access the web form than he will get an error message,

for example no more user is allow to log on until other users is not logout..

pls tell me it is possible using asp.net 2.0 or not.

if you than how?



Regards,

Arvind Mewara