Thank you Kenneth for your reply,

about the last point number 4 about access to the operator using the network login name, there are alot of function i have to write but actullay i am new to ASP.net could you please send me a sample of written code i can refrence to it so it help me in writting my code and i can change the code littel bit, coz i dont know how to write it and i dont know where to put it or how to call it, please help me, thank you.